Analytic isocenter calibration. A new approach for accurate x-ray gantries.

Abstract:

:Isocenter calibration transforms cardiac structures in digitized biplane angiograms to absolute dimensions, calculating their radiological magnification and video transformation. Since a scaling device is not required, isocenter calibration yields to more accurate measurements than the widely used reference object calibration. Both isocenter methods reported so far, regarding geometrically inaccurate x-ray gantries, yield to different and complex computational formulas. Since these formulas are hard to understand, isocenter calibration is less widely used. To facilitate the implementation of the isocenter calibration, the basic formulas for accurate x-ray gantries are derived. Shifting virtually one x-ray system onto the other, basic isocenter calibration is derived geometrically in three simple steps. The radiological magnification of an object is illustrated as a ratio of planes. The calculation of all parameters entering the computations is demonstrated geometrically, by use of the isocenter of the x-ray gantry. The derivation gives a clear idea of isocenter calibration. It is simple to derive and facilitates the understanding of the error regarding developments. When geometrical inaccuracies vanish, all formulas become equivalent. However, even if the inaccuracies increase, all methods provide nearly identical results, indicating the robustness of isocenter calibration.

journal_name

Angiology

journal_title

Angiology

authors

Wunderlich W,Fischer F,Linderer T,Kirkeeide RL

doi

10.1177/000331979504600704

subject

Has Abstract

pub_date

1995-07-01 00:00:00

pages

577-82

issue

7

eissn

0003-3197

issn

1940-1574

journal_volume

46

pub_type

杂志文章
  • Central inhibition of sympathetic overdrive by clonidine in acute myocardial infarction with systolic hypertension. Haemodynamic study.

    abstract::Intravenous clonidine was used to treat systolic hypertension (systolic blood pressure greater than 160 mm Hg) in 15 patients with acute myocardial infarction and documented sympathetic overactivity (high plasma norepinephrine). Its effects on haemodynamics and blood gases were studied. After one hour, clonidine signi...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331978603700903

    authors: Renard M,Liebens I,Waterschoot P,Bernard R

    更新日期:1986-09-01 00:00:00

  • The difficult venous ulcer: case series of 177 ulcers referred for vascular surgical opinion following failure of conservative management.

    abstract::Venous leg ulcers are common, chronic, debilitating, and expensive. Evidence supports use of compression bandaging, with superficial venous surgery in selected cases, but these interventions frequently fail to achieve healing. We describe a series of 152 consecutive referrals from a nurse-led specialist dermatology cl...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319709332901

    authors: Neequaye SK,Douglas AD,Hofman D,Wolz M,Sharma R,Cummings R,Hands L

    更新日期:2009-08-01 00:00:00

  • Effect of transradial coronary angiography procedure on vascular diameter and vasodilator functions in the access site.

    abstract::The present study aimed to investigate the long-term effects of transradial procedures on the radial artery diameter and vasodilator properties. The study included a total of 35 patients (28 males and 7 females) who underwent left transradial coronary angiography with an appropriate indication. The radial artery diame...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319712458450

    authors: Okuyan H,Açikgoz SK,Tacoy G,Kocaman SA,Abaci A

    更新日期:2013-10-01 00:00:00

  • Pulse Wave Velocity in Kawasaki Disease.

    abstract::Kawasaki disease (KD) is an acute childhood febrile disease of unknown etiology. It exhibits not only coronary artery aneurysms in some cases but also systemic vasculitis. Whether KD is associated with accelerated atherosclerosis remains debatable. The measurement of pulse wave velocity (PWV) is useful as a simple, no...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319716651789

    authors: Iwazu Y,Minami T,Kotani K

    更新日期:2017-03-01 00:00:00

  • Value of C-Reactive Protein/Albumin Ratio in Predicting the Development of Contrast-Induced Nephropathy in Patients With Non-ST Elevation Myocardial Infarction.

    abstract::Contrast-induced nephropathy (CIN) accounts for about 10% of all hospital-acquired acute kidney injury. We aimed to assess the role of the combination of 2 inflammatory biomarkers, the C-reactive protein (CRP)/albumin ratio (CAR), in the development of CIN after percutaneous coronary intervention (PCI) in patients wit...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319719898057

    authors: Satilmis S,Karabulut A

    更新日期:2020-04-01 00:00:00

  • Treatment of the bradycardia-tachycardia syndrome with permanent demand pacing.

    abstract::The bradycardia-tachycardia syndrome (paroxysmal supraventricular tachycardia alternating with sinus bradycardia and episodes of sinus node arrest) has previously presented a complicated therapeutic dilemma when excitatory and suppressive drugs have been utilized. A patient with this syndrome successfully treated with...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331977602700406

    authors: Pittman DE

    更新日期:1976-04-01 00:00:00

  • Pharmacokinetics of N-acetylprocainamide.

    abstract::Shortly after Dreyfus and his colleagues demonstrated that procainamide was metabolized by acetylation to N-acetylprocainamide (NAPA), Drayer, Reidenberg and Sevy reported that NAPA had antiarrhythmic activity in an animal model. We confirmed these findings and found that plasma levels of NAPA were high enough to warr...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:

    authors: Atkinson AJ Jr,Ruo TI

    更新日期:1986-12-01 00:00:00

  • Successful treatment of primary cardiac angiosarcoma with docetaxel and radiotherapy.

    abstract::A 49-year-old man was admitted for primary cardiac angiosarcoma with a cardiac tamponade. Transthoracic echocardiography and contrast-enhanced computed tomography scan demonstrated a large mass in the right atrium and thickening of the right ventricular wall. 18F-labeled deoxyglucose (FDG) positron emission tomography...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319707308212

    authors: Nakamura-Horigome M,Koyama J,Eizawa T,Kasai H,Kumazaki S,Tsutsui H,Koiwai K,Oguchi K,Kinoshita O,Ikeda U

    更新日期:2008-06-01 00:00:00

  • A comparison of transradial and transfemoral approaches for percutaneous coronary intervention in elderly patients based on a propensity score analysis.

    abstract::The transradial approach (TRA) has been used as access site for percutaneous coronary intervention (PCI) for years. However, no large sample study has evaluated the effect of TRA in elderly patients. A total of 1098 elderly patients (age ≥ 75 years) who underwent PCI by TRA or transfemoral approach were recruited. A 1...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319714535971

    authors: He PY,Yang YJ,Qiao SB,Xu B,Yao M,Wu YJ,Yuan JQ,Chen J,Liu HB,Dai J,Tang XR,Wang Y,Li W,Gao RL

    更新日期:2015-05-01 00:00:00

  • Incidence of arteriosclerotic lesions of the carotid arteries in chronic peripheral arterial disease and myocardial infarction.

    abstract:UNLABELLED:Arteriosclerotic lesions in the carotid arteries are the main cause of ischemic cerebral infarction. Only a few studies of the incidence of carotid lesions in patients with chronic peripheral arterial disease (CPAD) and myocardial infarction (MI) have been made. Thus the aim of this study was to investigate ...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331978904000108

    authors: Spürk P,Angelkort B,Selter P

    更新日期:1989-01-01 00:00:00

  • Immunoscintigraphy of venous thrombi: clinical effectiveness of a new antifibrin D-dimer monoclonal antibody.

    abstract::Safety and thrombus imaging capabilities of the 99mTc-labeled form of a new F(ab')2 monoclonal antibody (MoAb) against fragment D dimers from cross-linked human fibrin, previously shown to be effective labeled to 131I in detecting venous thrombi in the rabbit, were investigated. Sixteen patients (seven men, mean age: ...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331979905000203

    authors: Ciavolella M,Tavolaro R,Di Loreto M,La Torre F,Nicolai A,Schillaci O,Ierardi M,Scopinaro F

    更新日期:1999-02-01 00:00:00

  • Hemodynamics and gas exchange during angioscopy in the dog.

    abstract::We have previously developed a technique for the in vivo visualization of the pulmonary arteries in the experimental animal with a fiberoptic instrument (angioscope). To assess the potential hemodynamic and gas exchange effects of angioscopy, we studied five dogs before and after pulmonary embolization. Sequential obs...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331978403500205

    authors: Shure D,Moser KM,Konopka RG

    更新日期:1984-02-01 00:00:00

  • Clinical evaluation of the efficacy and safety of calcium dobesilate in patients with chronic venous insufficiency of the lower limbs.

    abstract::Several venotonic drugs have been used in the treatment of chronic venous insufficiency (CVI) of the lower limbs, most of them from natural sources. Calcium dobesilate, from synthetic origin, has been shown to improve clinical symptoms of these venous conditions. Three hundred fifty-two patients with CVI in grades I a...

    journal_title:Angiology

    pub_type: 临床试验,杂志文章,多中心研究

    doi:10.1177/000331970205300506

    authors: Arceo A,Berber A,Treviño C

    更新日期:2002-09-01 00:00:00

  • Prognostic Value of the Neutrophil-to-Lymphocyte Ratio in Patients With Myocardial Infarction With Non-obstructive Coronary Arteries.

    abstract::Myocardial infarction with non-obstructive coronary arteries (MINOCA) is a heterogeneous entity with an inflammatory etiopathogenesis. This study investigated the prognostic value of the neutrophil-to-lymphocyte ratio (NLR) in patients with MINOCA. Coronary angiographies performed between June 2015 and August 2018 wer...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319720938621

    authors: Gürdal A,Keskin K,Siğirci S,Yildiz SS,Kiliçkesmez KO

    更新日期:2020-10-01 00:00:00

  • Applicability of Transcutaneous Oxygen Tension Measurement in the Assessment of Chronic Limb-Threatening Ischemia.

    abstract::Transcutaneous oxygen tension measurement (TcPO2) is widely applied for the evaluation of chronic limb-threatening ischemia (CLTI). Nevertheless, studies that focused on the clinical value of TcPO2 have shown varying results. We identified factors that potentially play a role in TcPO2 measurement variation such as pro...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319719866958

    authors: Leenstra B,Wijnand J,Verhoeven B,Koning O,Teraa M,Verhaar MC,de Borst GJ

    更新日期:2020-03-01 00:00:00

  • Atrial Fibrillation in Patients Hospitalized With Heart Failure: Patient Characteristics and Outcomes From the HEARTS Registry.

    abstract::Effect of atrial fibrillation (AF) on short- and long-term outcomes in heart failure (HF) is controversial. Accordingly, we examined this relationship in a national multicenter project using data from the Hearts Function Assessment Registry Trial in Saudi Arabia that studied the clinical features and outcomes of patie...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319717711764

    authors: Ajlan M,Almazroa L,AlHabib KF,Elasfar AA,Alfaleh H,Albackr H,Kashour T,Hersi A,Hussein GA,Mimish L,Almasood A,AlHabeeb W,AlGhamdi S,Alsharari M,Chakra E,Malik A,Soomro R,Ghabashi A,Al-Murayeh M,Abuosa A

    更新日期:2018-02-01 00:00:00

  • Consequence of diseases in aorta on evaluation of aortic regurgitation by aortic flow velocity profiles.

    abstract::The aim of the study was to investigate whether flow velocity profiles of the aorta are related to the severity of aortic valve regurgitation (AR) in patients with diseases of the aorta. Aortic root angiography, abdominal aortic flow velocity measurements by pulsed Doppler method, and regurgitant jet measurements by c...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331979404500704

    authors: Mitani M,Tamai J,Miyatake K

    更新日期:1994-07-01 00:00:00

  • Effects of heart rate on brachial-ankle pulse wave velocity and ankle-brachial pressure index in patients without significant organic heart disease.

    abstract::This study evaluated the effects of heart rate (HR) on brachial-ankle pulse wave velocity (baPWV) and ankle-brachial pressure index (ABI). Thirty-two patients without significant organic heart disease underwent elective cardiac catheterization or electrophysiologic study, and were then enrolled in right atrial pacing ...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319706295481

    authors: Su HM,Lee KT,Chu CS,Lee MY,Lin TH,Voon WC,Sheu SH,Lai WT

    更新日期:2007-02-01 00:00:00

  • Noninvasive versus invasive evaluation of the extracranial circulation in patients with suspected cerebral vascular disease.

    abstract::This is the second in an ongoing series of evaluations in an attempt to find a combined system of noninvasive cerebral vascular evaluation of the extracranial circulation reliable enough so that decisions can be made, utilizing this system regarding further diagnostic studies and management. The current study evaluate...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331978303400304

    authors: Alves AM,Sterensis JB

    更新日期:1983-03-01 00:00:00

  • Hypoplastic pulmonary arteries and aorta with obstructive uropathy in 2 siblings.

    abstract::Two sisters who presented with diffuse hypoplasia of pulmonary arteries, relative hypoplasia of ascending aorta, obstructive uropathy, bilateral ureteral reflux, and hydronephrosis, are described. The subsequent course was characterized by progressive and gradual onset of right heart failure, failure to thrive, chroni...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331978403500408

    authors: Kashani IA,Strom CM,Utley JE,Marin-Garcia J,Higgins CB

    更新日期:1984-04-01 00:00:00

  • Mortality of patients with renal dysfunction after percutaneous coronary intervention.

    abstract:AIM:To determine the impact of stages of renal dysfunction on mortality after percutaneous coronary intervention (PCI) in patients with acute coronary syndrome (ACS). PATIENTS AND METHODS:A total of 449 patients (mean age 63 +/- 11.9 years) with ACS after PCI were included. Serum creatinine was determined and creatini...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319709335511

    authors: Bevc S,Penko M,Kanic V,Hojs R

    更新日期:2010-02-01 00:00:00

  • Transient myocardial ischemia during Holter registration before and after coronary angioplasty.

    abstract:PURPOSE:Revascularizing procedures like percutaneous transluminal coronary angioplasty (PTCA) aim at reducing the incidence and severity of myocardial ischemia. To evaluate this, continuous Holter ST analysis is a possible method. DESIGN:41 patients (35 men, 6 women) with stable angina pectoris had continuous twenty-f...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331979104200601

    authors: Johansson SR,Sánez M,Emanuelsson H

    更新日期:1991-06-01 00:00:00

  • Anomalous origin of the coronary arteries.

    abstract::The incidence and the clinical significance of various forms of anomalous aortic origin of coronary arteries are not well known. Among 2,000 consecutive patients who underwent selective coronary aretriography, 11 had such anomalies (0.55%). Two patients with atresia of the left main ostia developed ischemic symptoms a...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331978703800206

    authors: Teplitsky I,Wurzel M,Melamed R,Aygen M

    更新日期:1987-02-01 00:00:00

  • Value of treadmill exercise testing in patients with complete bundle branch block.

    abstract::Exercise electrocardiography and selective coronary arteriography was performed in 24 consecutive patients with complete bundle branch block. The criteria for a positive exercise electrocardiogram (E-ECG) were a 1 mm depression or elevation in the J point from the control state, as well as in the ST-segment measured a...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331977903000603

    authors: Susmano A,Teran JC

    更新日期:1979-06-01 00:00:00

  • Physical overdistension converts ventricular cardiomyocytes to acquire endocrine property and regulate ventricular atrial natriuretic peptide production.

    abstract::Atrial natriuretic peptide (ANP) is present in adult atria but at very low concentrations in normal adult mammalian ventricles. In the atria, the production of ANP is regulated by physical distension of the atrial wall. The same phenomenon was investigated in the ventricles of rats and men. Cardiac tissues from human ...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331979104200301

    authors: Gu J,D'Andrea M,Seethapathy M,McDonnell C,Cichon R

    更新日期:1991-03-01 00:00:00

  • Tumor Protein p53 (TP53) Gene and Left Main Coronary Artery Disease.

    abstract::Patients with left main (LM) coronary artery disease (CAD) are at the highest risk of cardiovascular events. We evaluated possible gene polymorphisms of tumor protein 53 ( TP53, rs1042522, p.Arg72Pro) that can differentiate LM-CAD from patients with more peripheral CAD (MP-CAD) and healthy participants (control group)...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319718760075

    authors: Kolovou V,Tsipis A,Mihas C,Katsiki N,Vartela V,Koutelou M,Manolopoulou D,Leondiadis E,Iakovou I,Mavrogieni S,Kolovou G

    更新日期:2018-09-01 00:00:00

  • Mitral valve prolapse: whiplike motion of the posterior mitral leaflet detected by two-dimensional echocardiography.

    abstract::Thirty-four patients with symptoms suggesting mitral valve prolapse were evaluated by M-mode echocardiography, real time, two-dimensional, phase array echocardiography, and cardiac catheterization. Ten of these patients had unequivocal evidence of mitral valve prolapse during cardiac catheterization. This diagnosis wa...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331978003100307

    authors: Kounis NG

    更新日期:1980-03-01 00:00:00

  • Endothelial derived vasoactive factors and leukocyte derived inflammatory mediators in subjects with asymptomatic atherosclerosis.

    abstract::To clarify relationships between the (endothelial vasodilatory and vasoconstrictive function) and leukocyte inflammatory mediators in subjects with asymptomatic atherosclerosis, we measured (intraplatelet cyclic 3',5'-guanosine monophosphate [cGMP] and cyclic 3',5'-adenosine monophosphate [cAMP]), plasma endothelin (E...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/000331979804901201

    authors: Anwaar I,Gottsäter A,Hedblad B,Palmqvist B,Mattiasson I,Lindgärde F

    更新日期:1998-12-01 00:00:00

  • Patient assessment and examples of a method of treatment. Use of the circulator boot in peripheral vascular disease.

    abstract::Effective peripheral blood flow is positively related to cardiac output and gravity (part dependent) and inversely related to gravity (part elevated), venous pressure, interstitial fluid pressure, degree of peripheral neuropathy, arteriosclerotic and thrombotic arterial obstructions, and infection. These factors are c...

    journal_title:Angiology

    pub_type: 杂志文章

    doi:10.1177/0003319797048005S04

    authors: Dillon RS

    更新日期:1997-05-01 00:00:00

  • Comparison of Iodixanol and Iopromide in Patients With Renal Insufficiency and Congestive Heart Failure Undergoing Coronary Angiography by Hemodynamic Monitoring.

    abstract::We investigated the impact of contrast media (CM) with different osmolality on cardiac preload in patients with chronic kidney disease (CKD) and congestive heart failure (CHF). Patients with CKD and CHF were equally randomized to receive either iso-osmolar contrast media (IOCM) iodixanol or low-osmolar contrast media ...

    journal_title:Angiology

    pub_type: 杂志文章,随机对照试验

    doi:10.1177/0003319717701868

    authors: Qian G,Yang YQ,Dong W,Cao F,Chen YD

    更新日期:2017-11-01 00:00:00