abstract：RATIONALE AND OBJECTIVES:Malignancy provokes regional changes to vessel shape. Characteristic vessel tortuosity abnormalities appear early during tumor development, affect initially healthy vessels, spread beyond the confines of tumor margins, and do not simply mirror tissue perfusion. The ability to detect and quantif...

journal_title：Academic radiology

authors： Bullitt E,Zeng D,Gerig G,Aylward S,Joshi S,Smith JK,Lin W,Ewend MG

更新日期：2005-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To demonstrate that a massive training artificial neural network (MTANN) can be adequately trained with a small number of cases in the distinction between nodules and vessels (non-nodules) in thoracic computed tomography (CT) images. MATERIALS AND METHODS:An MTANN is a trainable, highly nonlin...

journal_title：Academic radiology

authors： Suzuki K,Doi K

更新日期：2005-10-01 00:00:00

abstract：:Cryoablation is one of several minimally invasive treatments that may be suitable for a targeted treatment of prostate cancer. Because efficacy is improved when a sufficiently cold end temperature is reached, the purpose of this work was to demonstrate an image-based thermometry method that could provide temperature m...

journal_title：Academic radiology

authors： Wansapura JP,Daniel BL,Vigen KK,Butts K

更新日期：2005-09-01 00:00:00

abstract：:Initial research in the development of interventional magnetic resonance (MR) imaging in the late 1980s and early to mid-1990s focused on pulse sequences, devices, and clinical applications. This focus was largely a result of the limited number of areas in which the academic research community leading the development ...

journal_title：Academic radiology

authors： Elgort DR,Duerk JL

更新日期：2005-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:A critical element in determining biologic behavior of pulmonary nodules is volume and temporal volume change. We evaluate variability in nodule volume among readers and measuring methods. MATERIALS AND METHODS:55 small (<2 cm) lung nodules were measured in long- and short-axis dimensions inde...

journal_title：Academic radiology

authors： Bogot NR,Kazerooni EA,Kelly AM,Quint LE,Desjardins B,Nan B

更新日期：2005-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Mammographic density and parenchymal patterns have been shown to be related to the risk of developing breast cancer. Thus, computerized texture analysis of breast parenchymal patterns on mammograms may be useful in assessing breast cancer risk. MATERIALS AND METHODS:A comparative evaluation wa...

journal_title：Academic radiology

authors： Li H,Giger ML,Olopade OI,Margolis A,Lan L,Chinander MR

更新日期：2005-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The association between hepatic steatosis and oral 5-fluorouracil (5-FU) agents is clinically recognized but has not been systematically studied. The aim of this study was to determine the effects of 5-FU on hepatic fat content in patients undergoing oral 5-FU therapy and to compare the effects...

journal_title：Academic radiology

authors： Miyake K,Hayakawa K,Nishino M,Morimoto T,Mukaihara S

更新日期：2005-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Dimeric nonionic iodinated contrast has a lower osmolality than monomeric nonionic iodinated contrast but is available at lower iodine concentrations. Less dilution of intravascular fluid by influx from the extravascular space is proposed to occur with decreasing osmolality. The purpose of this...

journal_title：Academic radiology

authors： Pannu HK,Thompson RE,Phelps J,Magee CA,Fishman EK

更新日期：2005-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The purpose of this study was to evaluate our preliminary experience with routine contrast-enhanced magnetic resonance angiography (CE-MRA) of the lower limb arteries in patients with end-stage renal failure. MATERIALS AND METHODS:A retrospective analysis was performed on clinical, physiologic...

journal_title：Academic radiology

authors： Perriss R,Løkkegaard H,Løgager V,Chabanova E,Thomsen HS

更新日期：2005-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:We sought to quantify patient preferences for mild, moderate, and severe low back pain via time-tradeoff analysis and utility measurement. MATERIALS AND METHODS:Forty-one patients being treated for low back pain in a tertiary care teaching hospital participated in the study. Patients were aske...

journal_title：Academic radiology

authors： Lai KC,Provenzale JM,Delong D,Mukundan S Jr

更新日期：2005-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVE:Among artifacts on three-dimensional (3D) angiograms, pseudostenosis in vessels adjacent to intracranial aneurysms has not been described. By using a phantom, artifacts seen in vessels adjacent to intracranial aneurysms on volume-rendered 3D angiograms were assessed. MATERIALS AND METHODS:Using...

journal_title：Academic radiology

authors： Yamura M,Hirai T,Korogi Y,Ikushima I,Yamashita Y,Oishi S

更新日期：2005-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVE:Today, the exchange of medical images and clinical information is well defined by the digital imaging and communications in medicine (DICOM) and Health Level Seven (ie, HL7) standards. The interoperability among information systems is specified by the integration profiles of IHE (Integrating the...

journal_title：Academic radiology

authors： Hackländer T,Kleber K,Martin J,Mertens H

更新日期：2005-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVE:The advantage of a higher static magnetic field for functional MRI has been advocated; however, the observed advantage varies. The aim of this study was to evaluate the effect of increasing static magnetic field strength on the task-related increase in blood oxygenation level-dependent (BOLD) si...

journal_title：Academic radiology

authors： Okada T,Yamada H,Ito H,Yonekura Y,Sadato N

更新日期：2005-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVE:Abnormal neurodevelopment may play a role in the pathophysiology of schizophrenia. We used deformation-based morphometry to examine voxel-wise age-related changes in patients with schizophrenia compared with healthy brains. MATERIALS AND METHODS:We used a set of skull-stripped brains from an im...

journal_title：Academic radiology

authors： Dubb A,Xie Z,Gur R,Gur R,Gee J

更新日期：2005-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVE:The aim of the study was to survey misfiled cases in a picture archiving and communication system environment at two hospitals and to demonstrate the potential usefulness of an automated patient recognition method for posteroanterior chest radiographs based on a template-matching technique desig...

journal_title：Academic radiology

authors： Morishita J,Watanabe H,Katsuragawa S,Oda N,Sukenobu Y,Okazaki H,Nakata H,Doi K

更新日期：2005-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Computed tomography (CT) was used to noninvasively monitor local drug pharmacokinetics from polymer implants in rat livers before and following radiofrequency ablation. MATERIALS AND METHODS:Polymer matrixes containing carboplatin (a platinum-containing chemotherapeutic agent) were implanted i...

journal_title：Academic radiology

authors： Exner AA,Weinberg BD,Stowe NT,Gallacher A,Wilson DL,Haaga JR,Gao J

更新日期：2004-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The American Cancer Society (ACS) and the United States Preventive Services Task Force (USPSTF) recommend colorectal cancer (CRC) screening to begin at age 50 in individuals at average risk for CRC. To estimate rate at which women eligible for CRC screening at the time of screening mammography ...

journal_title：Academic radiology

authors： Molina L,Carlos RC,Mark Fendrick A,Abrahamse PH,Dong Q,Bernstein SJ

更新日期：2004-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Describe new interactive digital teaching methods for medical student education in radiology and evaluate student responses. MATERIALS AND METHODS:Third- and fourth-year medical students on radiology clerkship were taught using either film-based "hot seat" format, digital "hot seat," or didact...

journal_title：Academic radiology

authors： Su TJ,Shaffer K

更新日期：2004-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVE:Targeted delivery is a highly desirable strategy for diagnostic imaging because of enhanced efficacy and reduced dosage/toxicity. Receptor-targeting was used to deliver contrast-producing superparamagnetic iron oxide (IO) nanoparticle to receptor-expressing tumors for in vivo magnetic resonance ...

journal_title：Academic radiology

authors： Choi H,Choi SR,Zhou R,Kung HF,Chen IW

更新日期：2004-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Because several factors are involved in cancer detection, a malignant lesion that is visible on a mammogram will not necessarily be reported by the radiologist reading the case. Indeed, a significant fraction of screening-detected cancers are visible in retrospect, and were perceived by the rad...

journal_title：Academic radiology

authors： Mello-Thoms C,Chapman B

更新日期：2004-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The purpose of ordering an imaging test for headache, which is one of the most common reasons for patient consultation with a primary care physician (PCP), include medical indications as well as patient anxiety and medico-legal concerns. The impact of nonclinical factors on PCPs' ordering patte...

journal_title：Academic radiology

authors： Couchman GR,Forjuoh SN,Rajab MH,Phillips CD,Yu J

更新日期：2004-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Subcutaneous melanomas may be missed on computed tomography because of their peripheral location or perceived unimportance, yet they can have clinical significance. The use of a novel computer-assisted detection scheme to locate subcutaneous melanoma lesions in body CT images was investigated. ...

journal_title：Academic radiology

authors： Solomon J,Mavinkurve S,Cox D,Summers RM

更新日期：2004-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Introduction of combination of the segmentation tool SegoMeTex and the virtual endoscopy system VIVENDI to perform virtual endoscopic inspections of the human lung. This virtual bronchoscopy system enables visualization of the tracheobronchial tree down to seventh generation. Furthermore, the m...

journal_title：Academic radiology

authors： Mayer D,Bartz D,Fischer J,Ley S,del Río A,Thust S,Kauczor HU,Heussel CP

更新日期：2004-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the feasibility and performance of an x-ray beam equalization system for chest radiography using anthropomorphic phantoms. MATERIALS AND METHODS:Area beam equalization involves the process of the initial unequalized image acquisition, attenuator thickness calculation, mask generati...

journal_title：Academic radiology

authors： Xu T,Shikhaliev PM,Berenji GR,Tehranzadeh J,Saremi F,Molloi S

更新日期：2004-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To determine the diagnostic accuracy of stereotactically and sonographically guided core biopsy (CB) for the diagnosis of nonpalpable breast lesions. MATERIALS AND METHODS:Twenty-two institutions enrolled 2,403 women who underwent imaging-guided fine needle aspiration followed by imaging-guide...

journal_title：Academic radiology

authors： Fajardo LL,Pisano ED,Caudry DJ,Gatsonis CA,Berg WA,Connolly J,Schnitt S,Page DL,McNeil BJ,Radiologist Investigators of the Radiologic Diagnostic Oncology Group V.

更新日期：2004-03-01 00:00:00

abstract：:Continuous quality improvement methods provide a relatively new way to improve quality in healthcare by using a systems approach with key features of customer-mindedness, data collection, experimentation, and teamwork. CQI is not meant to solve simple problems but is increasingly applied in our complex healthcare orga...

journal_title：Academic radiology

authors： Applegate KE

更新日期：2004-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Manganese is a well-known liver-specific agent used in magnetic resonance imaging. For this purpose, manganese is now administered intravenously. In theory it should be possible to increase the gastrointestinal uptake of manganese through the use of nutritional products as promoters. Such an ag...

journal_title：Academic radiology

authors： Thomsen HS,Svendsen O,Klastrup S

更新日期：2004-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The purpose of this study was to determine if continuous arterial spin-labeling perfusion magnetic resonance imaging could be used to detect testicular perfusion in human subjects. MATERIALS AND METHODS:Continuous arterial spin-labeling magnetic resonance perfusion imaging was performed in sev...

journal_title：Academic radiology

authors： Pretorius ES,Roberts DA

更新日期：2004-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:A method is presented to track guide wires during endovascular interventions under X-ray fluoroscopy. Accurate guide wire tracking can be used to improve guide wire visualization in the low quality fluoroscopic images, and to estimate the position of the guide wire in world coordinates for navi...

journal_title：Academic radiology

authors： Baert SA,van Walsum T,Niessen WJ

更新日期：2003-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To determine the differences in the psychosocial effects and future mammography screening behavior between women who had an abnormal mammogram followed either by percutaneous or open surgical breast biopsy or cyst aspiration, or by short-term follow-up mammography to provide insight to radiolog...

journal_title：Academic radiology

authors： Currence BV,Pisano ED,Earp JA,Moore A,Chiu YF,Brown ME,Kurgat KL

更新日期：2003-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Current imaging procedures of the lung concentrate on visualization of morphology. Computed tomography is the imaging method of choice for the majority of pulmonary diseases. Functional data are commonly obtained from arterial blood gas analysis, spirometry, and body plethysmography, which all ...

journal_title：Academic radiology

authors： Gast KK,Eberle B,Schmiedeskamp J,Kauczor HU

更新日期：2003-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Primary dilated cardiomyopathy is a disease of unknown etiology, and it leads to severe heart failure. Abnormalities of the cardiac metabolism can play an important role in prognosis and influence the symptomatology in this group. The aim of this study was to assess cardiac metabolism using pro...

journal_title：Academic radiology

authors： Walecki J,Michalak MJ,Michalak E,Bilinska ZT,Ruzyllo W

更新日期：2003-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To report the detection rate for lung cancers in computed tomography (CT) screening in Japanese adults, and to analyze differences in the appearance of the cancers in non-smokers versus smokers. MATERIALS AND METHODS:Subjects consisted of 7,847 Japanese adults who received low-dose CT screenin...

journal_title：Academic radiology

authors： Li F,Sone S,Abe H,MacMahon H,Doi K

更新日期：2003-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The goal of the study was to determine whether there are certain physical features of pulmonary nodules that attract visual attention and contribute to increased recognition and detection by observers. MATERIALS AND METHODS:A series of posteroanterior chest images with solitary pulmonary nodul...

journal_title：Academic radiology

authors： Krupinski EA,Berger WG,Dallas WJ,Roehrig H

更新日期：2003-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Digitizing images for use in case presentations based on hardcopy films, slides, photographs, negatives, books, and videos can present a challenging task. Scanners and digital cameras have become standard tools of the trade. Unfortunately, use of these devices to digitize multiple images in man...

journal_title：Academic radiology

authors： McEachen JC,Cusack TJ,McEachen JC

更新日期：2003-08-01 00:00:00

abstract：:A group of experts on very large databases, quantitative imaging, data format standards development, image management and communications, and related technologies for cancer imaging met at a recent workshop sponsored by the BIP and discussed the key issues confronting this field. The BIP received recommendations regar...

journal_title：Academic radiology

authors： Vannier MW,Staab EV,Clarke LP

更新日期：2003-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The purpose of this study was to evaluate residents' use of a radiology curriculum CD-ROM designed to provide ready access to the department's curricula, study materials, and Internet resources. MATERIALS AND METHODS:A survey questionnaire eliciting feedback about the usability and value of th...

journal_title：Academic radiology

authors： Bartlett ES,Maley JE,Fajardo LL

更新日期：2003-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Renal tubular vacuolization (RTV), which has been shown to occur after the use of iodinated contrast material, may be one of the earliest signs of contrast medium-induced renal injury. In this study, the authors tested a method for preventing RTV with the administration of acetylcysteine, theop...

journal_title：Academic radiology

authors： Emch TM,Haller NA

更新日期：2003-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVE:Radiology faces a severe and growing shortage of radiologic technologists. One way of redressing this problem is to improve the quality of education provided to radiologic technology students. Yet growing clinical demands increasingly erode faculty time for teaching. This study examined whether ...

journal_title：Academic radiology

authors： Gunderman RB,Fraley R,Jackson V,Robinson S,Williamson K

更新日期：2003-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors evaluated the clinical utility of image coregistration in the interpretation of follow-up computed tomographic (CT) studies of the head. MATERIALS AND METHODS:Fourteen patients with 34 intracranial lesions underwent follow-up head CT. The images were coregistered automatically with...

journal_title：Academic radiology

authors： Schellingerhout D,Lev MH,Bagga RJ,Rincon S,Berdichevsky D,Thangaraj V,Gonzalez RG,Alpert NM

更新日期：2003-03-01 00:00:00