Aneurysm clips: evaluation of MR imaging artifacts at 1.5 T.

abstract：:Background Acute stroke because of basilar artery occlusion (BAO) represents 1% of all ischemic strokes. However, recanalization rates and treatment outcome for the different pathologic subtypes of BAO stroke are not fully understood. Purpose To compare the recanalization rate and clinical outcomes of mechanical throm...

journal_title：Radiology

authors： Baik SH,Park HJ,Kim JH,Jang CK,Kim BM,Kim DJ

更新日期：2019-06-01 00:00:00

abstract：PURPOSE:To assess the usefulness of intraarterial computed tomographic (CT) angiography in conjunction with digital subtraction angiography (DSA) by using a combined CT and angiographic unit in the preoperative evaluation of intracranial aneurysms. MATERIALS AND METHODS:Prospectively, 22 patients with or without subar...

journal_title：Radiology

authors： Hirai T,Korogi Y,Ono K,Murata Y,Suginohara K,Omori T,Uemura S,Takahashi M

更新日期：2001-08-01 00:00:00

abstract：PURPOSE:To evaluate toxicity and efficacy of endobronchial brachytherapy with high-dose-rate (HDR) after-loading of iridium-192 for recurrent endobronchial lesions. MATERIALS AND METHODS:From 1988 to 1993, 81 patients with lung cancer previously treated with external beam radiation therapy were treated with palliative...

journal_title：Radiology

authors： Delclos ME,Komaki R,Morice RC,Allen PK,Davis M,Garden A

更新日期：1996-10-01 00:00:00

abstract：:Magnetic resonance (MR) imaging of the kidneys was performed in 14 patients with a severe form of hemorrhagic fever with renal syndrome (HFRS), a major public health problem in Far Eastern Asia. To the authors' knowledge, this is the first report of renal assessment with MR imaging in HFRS. Three MR imaging studies we...

journal_title：Radiology

authors： Kim SH,Kim S,Lee JS,Choi BI,Kim YG,Han JS,Park JH,Han MC,Kim CW

更新日期：1990-06-01 00:00:00

abstract：:Between 1978 and 1982, 1,200 patients underwent angiography following acute traumatic injury, and arterial injuries were detected in 182 cases (15.2%). Two-thirds of the cases were associated with penetrating trauma; half the injuries occurred in the pelvis or lower extremities. The most common and reliable sign of ar...

journal_title：Radiology

authors： Sclafani SJ,Cooper R,Shaftan GW,Goldstein AS,Glanz S,Gordon DH

更新日期：1986-10-01 00:00:00

abstract：:Phantom and in vitro studies were performed to evaluate the potential application of digital circular tomosynthesis in imaging of the breast and upper cervical spine. A prototype volumetric x-ray system was used to image a mammographic phantom, a fresh mastectomy specimen, and a head phantom containing the upper cervi...

journal_title：Radiology

authors： Stevens GM,Birdwell RL,Beaulieu CF,Ikeda DM,Pelc NJ

更新日期：2003-08-01 00:00:00

abstract：:The Investigational Review Board approved the protocol, and all patients provided signed informed consent. The protocol was compliant with HIPAA. The purpose of the study was to prospectively test the hypothesis that addition of low-dose dobutamine and quantification of inotropic reserve in segments with 1%-50% infarc...

journal_title：Radiology

authors： Bove CM,DiMaria JM,Voros S,Conaway MR,Kramer CM

更新日期：2006-09-01 00:00:00

abstract：:Studies in dogs showed that heat-treated 99mTc-labeled red blood cells (HT/RBC) afford a highly sensitive means of detecting gastrointestinal bleeding as low as 0.12 ml/min., which could not be seen with unheated 99mTc-RBC, 99mTc-sulfur colloid, or 99mTc-DTPA. In addition, as the right upper quadrant and epigastrium r...

journal_title：Radiology

authors： Som P,Oster ZH,Atkins HL,Goldman AG,Sacker DF,Harold WH,Fairchild RG,Richards P,Brill AB

更新日期：1981-01-01 00:00:00

abstract：:Purpose To assess the feasibility of a magnetically assisted remote-controlled (MARC) catheter system under magnetic resonance (MR) imaging guidance for performing a simple endovascular procedure (ie, renal artery embolization) in vivo and to compare with x-ray guidance to determine the value of MR imaging guidance an...

journal_title：Radiology

authors： Lillaney PV,Yang JK,Losey AD,Martin AJ,Cooke DL,Thorne BR,Barry DC,Chu A,Stillson C,Do L,Arenson RL,Saeed M,Wilson MW,Hetts SW

更新日期：2016-10-01 00:00:00

abstract：PURPOSE:To evaluate the diagnostic performance of gray-scale ultrasonography (US) and elastography in differentiating benign and malignant thyroid nodules. MATERIALS AND METHODS:This was an institutional review board-approved retrospective study with waiver of informed consent. A total of 703 solid thyroid nodules in ...

journal_title：Radiology

authors： Moon HJ,Sung JM,Kim EK,Yoon JH,Youk JH,Kwak JY

更新日期：2012-03-01 00:00:00

abstract：:Twenty-six patients with an eqivocal portal defect on conventional nuclear images were evaluated with a multiplane tomographic nuclear scanner and gray scale ultrasound. In most cases the correct determination (normal or abnormal) for an area of decreased uptake could be made from the multiplane tomographic scans. Whe...

journal_title：Radiology

authors： Sample WF,Gray RK,Poe ND,Graham LS,Bennett LR

更新日期：1977-03-01 00:00:00

abstract：:Over a period of 60 months, percutaneous nonendoscopic gastrostomy for enteral feeding was successfully performed with the Seldinger technique in 250 of 252 consecutive patients. Local anesthetics alone (without intravenous sedatives) were used in 248 patients (98%). The 30-day mortality was 14.2% and included two pro...

journal_title：Radiology

authors： Halkier BK,Ho CS,Yee AC

更新日期：1989-05-01 00:00:00

abstract：:Data on all patients with pineal body tumors and suprasellar germinomas seen at the University of California--San Francisco over a 25-year period were reviewed. Of 19 patients treated, 15 are still alive. Although treatment techniques varied, all patients received irradiation to the primary tumor site but not to the s...

journal_title：Radiology

authors： Wara WM,Fellows CF,Sheline GE,Wilson CB,Townsend JJ

更新日期：1977-07-01 00:00:00

abstract：PURPOSE:To investigate the potential application of contrast material-enhanced three-dimensional (3D) ultrasonography (US), as compared with contrast-enhanced 3D computed tomography (CT), for characterization of focal liver tumors. MATERIALS AND METHODS:Institutional review board approval and informed patient consent ...

journal_title：Radiology

authors： Luo W,Numata K,Morimoto M,Kondo M,Takebayashi S,Okada M,Morita S,Tanaka K

更新日期：2009-04-01 00:00:00

abstract：:Background Assessment of femoral torsion at preoperative hip imaging is commonly recommended. However, it is unclear whether MRI is as accurate as CT and how different methods affect femoral torsion measurements. Purpose To compare MRI- and CT-based assessment of femoral torsion by using four commonly used measurement...

journal_title：Radiology

authors： Schmaranzer F,Kallini JR,Miller PE,Kim YJ,Bixby SD,Novais EN

更新日期：2020-08-01 00:00:00

abstract：:The chest radiographs of 33 adult hemophiliacs were reviewed for possible pulmonary features of this disease. Only 7 patients showed no abnormalities; 12 patients exhibited scarring, fibrosis, and pleural thickening of the lung, interpreted as the sequelae of intrapulmonary hemorrhage or hemothorax. The remaining 14 p...

journal_title：Radiology

authors： Putman CE,Gamsu G,Zinn D,McLoud T

更新日期：1976-01-01 00:00:00

abstract：:Extramedullary plasmacytoma is a rare form of plasma cell dyscrasia, in which malignant plasma cell tumors arise outside the bone marrow. The tumor may arise in any part of the body but the vast majority occur in the head and neck, primarily in the nasal cavity, paranasal sinuses, or upper airway. Six patients with ex...

journal_title：Radiology

authors： Schabel SI,Rogers CI,Rittenberg GM,Bubanj R

更新日期：1978-09-01 00:00:00

abstract：:The CT scans of 18 patients with documented pulmonary septic emboli were reviewed. CT features of septic emboli included multiple peripheral nodules ranging in size from 0.5 to 3.5 cm (15 of 18 patients [83%]), a feeding vessel sign (n = 12; [67%]), cavitation (n = 9; [50%]), wedge-shaped peripheral lesions abutting t...

journal_title：Radiology

authors： Kuhlman JE,Fishman EK,Teigen C

更新日期：1990-01-01 00:00:00

abstract：:Both ultrasonography and x-ray mammography were performed on a male patient who had breast carcinoma. While the x-ray mammographic features were highly suggestive of malignancy, the sonographic findings were subtle. Because of the technical difficulties associated with x-ray mammography of the male breast, ultrasound ...

journal_title：Radiology

authors： Jackson VP,Gilmor RL

更新日期：1983-11-01 00:00:00

abstract：PURPOSE:To characterize early changes in cardiac anatomy and function for lamin A/C gene (LMNA) mutation carriers by using magnetic resonance (MR) imaging and to develop tools to analyze and visualize the findings. MATERIALS AND METHODS:The ethical review board of the institution approved the study, and informed writt...

journal_title：Radiology

authors： Koikkalainen JR,Antila M,Lötjönen JM,Heliö T,Lauerma K,Kivistö SM,Sipola P,Kaartinen MA,Kärkkäinen ST,Reissell E,Kuusisto J,Laakso M,Oresic M,Nieminen MS,Peuhkurinen KJ

更新日期：2008-10-01 00:00:00

abstract：PURPOSE:To test the hypothesis that magnetic resonance (MR) imaging R1 (R1 = 1/T1) mapping after selectively labeling monocytes with a T1-shortening contrast agent in vivo would enable the quantitative measurement of their spatiotemporal kinetics in the setting of infarct healing. MATERIALS AND METHODS:All procedures ...

journal_title：Radiology

authors： Naresh NK,Xu Y,Klibanov AL,Vandsburger MH,Meyer CH,Leor J,Kramer CM,French BA,Epstein FH

更新日期：2012-08-01 00:00:00

abstract：:Three-compartment arthrography has been advocated in the current literature for evaluation of the intrinsic ligaments of the wrist. Previous techniques for distal radioulnar joint (DRUJ) injection introduce the needle directly into the joint space. As is done in shoulder arthrography, however, the needle tip can be po...

journal_title：Radiology

authors： Lomasney LM,Cooper RA

更新日期：1996-04-01 00:00:00

abstract：:The results of percutaneous drainage of abdominal abscesses in 136 patients are analyzed, revealing a failure rate of 23% (31 patients). The mortality rate was 1.4% (two patients); the rate of serious complications was 5% (seven patients). Failure rate was lowest in critically ill patients having palliative drainage o...

journal_title：Radiology

authors： Lang EK,Springer RM,Glorioso LW 3rd,Cammarata CA

更新日期：1986-05-01 00:00:00

abstract：PURPOSE:To determine the effect of surrounding tissue type on coagulation necrosis from radiofrequency (RF) ablation in a homogeneous animal tumor model. MATERIALS AND METHODS:Thirty canine venereal sarcomas were implanted in three tissue sites (subcutaneous, kidney, and lung) in 13 mildly immunosuppressed dogs. Five ...

journal_title：Radiology

authors： Ahmed M,Liu Z,Afzal KS,Weeks D,Lobo SM,Kruskal JB,Lenkinski RE,Goldberg SN

更新日期：2004-03-01 00:00:00

abstract：:Purpose To cross-validate T1-weighted oxygen-enhanced (OE) MRI measurements of tumor hypoxia with intrinsic susceptibility MRI measurements and to demonstrate the feasibility of translation of the technique for patients. Materials and Methods Preclinical studies in nine 786-0-R renal cell carcinoma (RCC) xenografts an...

journal_title：Radiology

authors： Little RA,Jamin Y,Boult JKR,Naish JH,Watson Y,Cheung S,Holliday KF,Lu H,McHugh DJ,Irlam J,West CML,Betts GN,Ashton G,Reynolds AR,Maddineni S,Clarke NW,Parker GJM,Waterton JC,Robinson SP,O'Connor JPB

更新日期：2018-09-01 00:00:00

abstract：PURPOSE:To measure the proportion of high-cost imaging generated by a radiologist's recommendation and to identify the imaging findings resulting in follow-up. MATERIALS AND METHODS:This retrospective HIPAA-compliant study had institutional review board approval, with waiver of informed consent. A recommended examinat...

journal_title：Radiology

authors： Lee SI,Krishnaraj A,Chatterji M,Dreyer KJ,Thrall JH,Hahn PF

更新日期：2012-02-01 00:00:00

abstract：PURPOSE:To prospectively determine if kinematic magnetic resonance (MR) imaging of the knee may demonstrate displacement of menisci with tears and, if so, to characterize displaceable and nondisplaceable meniscal tears. MATERIALS AND METHODS:The study was approved by the hospital's review board, and informed consent w...

journal_title：Radiology

authors： Boxheimer L,Lutz AM,Zanetti M,Treiber K,Labler L,Marincek B,Weishaupt D

更新日期：2006-01-01 00:00:00

abstract：:Mammography utilization remains below the level needed to achieve the National Cancer Institute's year-2000 goals for reducing breast cancer mortality by 50%. Previous research has identified both patient and physician barriers. The authors interviewed 600 randomly selected women who were offered a free mammographic e...

journal_title：Radiology

authors： Rimer BK,Keintz MK,Kessler HB,Engstrom PF,Rosan JR

更新日期：1989-07-01 00:00:00

abstract：:Times of maximal involvement in mouse skin were determined for reactions produced by graded doses of x irradiation combined with hyperthermic treatment at 37.5, 41, 42, 42.5 and 43 degrees C for one hour. The times of maximal involvement in each case were found to be independent of thermal treatment. These data provid...

journal_title：Radiology

authors： Leith JT

更新日期：1976-05-01 00:00:00

abstract：:Treatment of cancer is often confounded by tumor heterogeneity.Variations in perfusion inhibit drug delivery to all parts of the tumor (1). Differences in oxygen tension (Po2)cause variations in response to radiation therapy (2).Understanding this tumor heterogeneity, which is caused by the interplay between the cance...

journal_title：Radiology

authors： Mezrich R

更新日期：2012-05-01 00:00:00