Abstract:
PURPOSE:To compare the local-regional staging accuracy of the conventional two-dimensional (2D) T2-weighted imaging protocol and of the three-dimensional (3D) T2-weighted imaging protocol for preoperative magnetic resonance (MR) imaging in rectal cancer patients. MATERIALS AND METHODS:This retrospective study was approved by the institutional review board, and a waiver of informed consent was obtained. A review was conducted of 109 preoperative 3-T MR images obtained with 2D and 3D T2-weighted imaging protocols in rectal cancer patients. Two radiologists independently assessed the radiologic findings for T and N category lesions, conspicuity of tumor margin, and image quality of 2D and 3D data. Interactive multiplanar reconstruction was performed for 3D data analysis. The linear weighted kappa values for T2-weighted imaging staging results (2D and 3D data) and histopathologic staging results were calculated and compared. Wilcoxon signed rank test was performed to compare tumoral conspicuity and overall image quality. RESULTS:T category lesion staging accuracy values for 2D and 3D data, respectively, were 66.0% and 67.0% for reviewer 1 (P = .465) and 63.3% and 56.9% for reviewer 2 (P = .402). N category lesion staging accuracy values for 2D and 3D T2-weighted images, respectively, were 64.2% and 57.8% for reviewer 1 (P = .427) and 47.7% and 62.4% for reviewer 2 (P = .666). Tumor conspicuity was better for 2D T2-weighted imaging, but no significant difference in image quality was observed. CONCLUSION:Preoperative MR imaging in rectal cancer patients for staging with conventional 2D and multiplanar reconstruction 3D T2-weighted imaging protocols showed no significant differences in accuracy of T and N category staging and overall image quality, as determined by degree of artifact. However, the 3D T2-weighted imaging protocol had limitations in regard to lesion conspicuity.
journal_name
Radiologyjournal_title
Radiologyauthors
Kim H,Lim JS,Choi JY,Park J,Chung YE,Kim MJ,Choi E,Kim NK,Kim KWdoi
10.1148/radiol.09090587subject
Has Abstractpub_date
2010-02-01 00:00:00pages
485-92issue
2eissn
0033-8419issn
1527-1315pii
254/2/485journal_volume
254pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::A new software program provides the real-time display of high-resolution computed tomographic reformation in the axial, coronal, sagittal, or oblique views. The advantages of this new technique over the standard multiplanar format include (a) larger image display format, (b) reconstruction of entire dataset for each o...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.170.1.2909110
更新日期:1989-01-01 00:00:00
abstract:PURPOSE:To investigate if abnormal early contrast enhancement of the aorta and decreased attenuation of pulmonary arteries at deep-inspiration spiral computed tomographic (CT) angiography might be caused by a patent foramen ovale (PFO). MATERIALS AND METHODS:Two hundred forty-four spiral CT angiographic images of the ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2263012200
更新日期:2003-03-01 00:00:00
abstract::Purpose To determine the relationship of patellofemoral joint alignment and trochlear morphology to superolateral Hoffa fat pad (SHFP) edema on magnetic resonance (MR) images in older adults with or at risk for osteoarthritis of the knee. Materials and Methods Institutional review board approval and written informed c...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017162342
更新日期:2017-09-01 00:00:00
abstract::Six commercially available movable core guide wires were compared with each other and with a new design in glass models simulating tortuous vessels. The results demonstrate a wide variability in performance of the commercially available wires and the superiority of the new design. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.159.2.3961190
更新日期:1986-05-01 00:00:00
abstract::The diagnosis of seminal vesicle invasion by prostatic carcinoma is based on observation of foci of relatively decreased signal intensity on T2-weighted magnetic resonance (MR) images. Similar findings were observed in the absence of tumor invasion in nine patients who had recently undergone prostatic needle biopsy. N...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.185.2.1410340
更新日期:1992-11-01 00:00:00
abstract::Reference values (RVs) are recommended by the American Association of Physicists in Medicine for four radiographic projections, computed tomography, fluoroscopy, and dental radiography. RVs are used to compare radiation doses from individual pieces of radiographic equipment with doses from similar equipment assessed i...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2352020016
更新日期:2005-05-01 00:00:00
abstract::A prospective study was performed with 25 patients with ectopic pregnancies (EPs) who underwent treatment with transvaginal administration of methotrexate. Nineteen patients (76%) had positive responses to this treatment, and six (24%) had to undergo surgery: five because of increasing abdominal pain and one because o...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.185.3.1279740
更新日期:1992-12-01 00:00:00
abstract::Purpose To determine if a reduced-dose computed tomography (CT) protocol could effectively help to identify patients in the emergency department (ED) with moderate to high likelihood of calculi who would require urologic intervention within 90 days. Materials and Methods The study was approved by the institutional rev...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016151691
更新日期:2016-09-01 00:00:00
abstract:PURPOSE:To collect up-to-date data in healthy children to create a digital hand atlas (DHA) that can be used to evaluate, on the basis of the Greulich and Pyle atlas method, racial differences in skeletal growth patterns of Asian, African American, white, and Hispanic children in the United States. MATERIALS AND METHO...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2493080468
更新日期:2009-01-01 00:00:00
abstract::A 40-year-old man with a history of tuberculosis developed massive hemoptysis. Embolization of a bronchial artery branch did not resolve the bleeding. Selective angiography eventually revealed three pseudoaneurysms arising from an apical segmental branch of the right pulmonary artery, two of which were successfully em...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.193.2.7972750
更新日期:1994-11-01 00:00:00
abstract:PURPOSE:To compare the image quality and degree of vessel narrowing at flow-sensitive dephasing (FSD) magnetic resonance (MR) angiography of the hands with those at contrast material-enhanced MR angiography of the hands in patients with systemic sclerosis. MATERIALS AND METHODS:In a single-center study with institutio...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.10100851
更新日期:2011-04-01 00:00:00
abstract::The lateral C1-2 puncture approach for myelography is a modification of the technique for percutaneous radiofrequency cervical cordotomy. Positioning of the needle in the posterior, rather than anterior, one third of the canal avoids injury to anomalous vertebral artery branches which lie in the anterior half of the n...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/132.3.760
更新日期:1979-09-01 00:00:00
abstract::Normal kidney length was measured on the excretory urogram in 262 children 0 to 14.5 years of age (422 kidneys). While mean values were similar to those in the literature, the standard deviation (0.785 cm) was much lower than that reported previously. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.150.3.6695070
更新日期:1984-03-01 00:00:00
abstract::Real-time ultrasonography was useful in differentiating tumor from syringohydromyelia as the cause of cervical cord widening in four patients. Those with syringohydromyelia had a smooth, regular, cystic space located symmetrically in the spinal cord. Tumor appeared as an echogenic, hypoechoic, or cystic expansile lesi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.151.1.6701310
更新日期:1984-04-01 00:00:00
abstract:PURPOSE:To retrospectively compare the diagnostic yield and complications associated with the use of short versus long needle paths for computed tomography (CT)-guided biopsy of small subpleural lung lesions. MATERIALS AND METHODS:The study was approved by the institutional review board, and the requirement for inform...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2342031423
更新日期:2005-02-01 00:00:00
abstract::The value of computed tomography (CT) in determining the cause of obstructive jaundice in 67 proved cases is described. The presence of stones, the level of obstruction, the relative size of the ringlike structures produced by the dilated bile duct, and the shape of the distal visualized ring have proved to be the mos...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.139.3.7232730
更新日期:1981-06-01 00:00:00
abstract::The measured optical density of single-emulsion films depends on the film orientation. The orientation of the emulsion influences the amount of scattered light entering the detector. It is suggested that this measurement be done with the emulsion side facing the light detector. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/124.2.522
更新日期:1977-08-01 00:00:00
abstract::To evaluate the efficacy of ultrasound (US)-guided automated core biopsy of thyroid nodules, 74 biopsies were performed in 61 consecutive patients with an 18-gauge short-throw (1.1-cm excursion) biopsy gun. Results were correlated with diagnoses made at surgery (n = 38) or at sonographic follow-up of at least 6 months...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.202.3.9051050
更新日期:1997-03-01 00:00:00
abstract::Eccentric muscular actions involve the forced lengthening or stretching of muscles and tend to produce exertional injuries. This study used magnetic resonance (MR) imaging to serially evaluate muscles in five healthy, untrained subjects who performed exhaustive biceps exercise by doing isolated eccentric and concentri...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.179.3.2027970
更新日期:1991-06-01 00:00:00
abstract::A fluid collection within the retropubic space has a characteristic sonographic contour which, when combined with a partially distended bladder, resembles a yoke over a bell. The fluid conforms to the anterior convexity of the bladder. This configuration is distinct from that of ascites or a lymphadenectomy-related ly...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.147.1.6828730
更新日期:1983-04-01 00:00:00
abstract:PURPOSE:To prospectively investigate the clinical efficacy of using diffuse optical tomography (DOT) and ultrasonographic (US) localization with conventional US to differentiate malignant solid breast lesions from those that are benign. MATERIALS AND METHODS:The study was approved by the institutional review board and...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12120086
更新日期:2012-11-01 00:00:00
abstract:PURPOSE:To assess the ability of an extravasation detection accessory (EDA) to detect clinically important (> or = 10 mL) extravascular injection of iodinated contrast material delivered with an automated power injector. MATERIALS AND METHODS:Five hundred patients referred for contrast material-enhanced body computed ...
journal_title:Radiology
pub_type: 杂志文章,多中心研究
doi:10.1148/radiology.212.2.r99au14431
更新日期:1999-08-01 00:00:00
abstract::Shaped filters that are constructed of lead-loaded acrylic material for use in patient radiography are discussed. Use of the filters will result in improved overall image quality with significant exposure reduction to the patient (approximately a 2X reduction in breast exposure and a 3X reduction in thyroid gland expo...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.146.3.6828700
更新日期:1983-03-01 00:00:00
abstract::Background Radiomics extracts features from medical images more precisely and more accurately than visual assessment. However, radiomics features are affected by CT scanner parameters such as reconstruction kernel or section thickness, thus obscuring underlying biologically important texture features. Purpose To inves...
journal_title:Radiology
pub_type: 杂志文章,多中心研究
doi:10.1148/radiol.2019182023
更新日期:2019-04-01 00:00:00
abstract::The biodistribution of radiomanganese (54Mn) was studied in mice, rats, and dogs. Disappearance of radioactivity from the blood was extremely rapid, with a half-time of approximately 0.8 minutes. This resulted in very favorable myocardium-to-blood ratios, even at early times after administration. The myocardial uptake...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/133.3.769
更新日期:1979-12-01 00:00:00
abstract::Ten ureteral strictures that developed in nine patients after renal transplantation were managed with balloon catheter dilation and placement of a ureteral stent. Four strictures were successfully dilated (40%), with a follow-up of 15-42 months (mean, 29 months). Comparison of these cases with the six cases of unsucce...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.186.3.8430180
更新日期:1993-03-01 00:00:00
abstract::Seventeen bilateral upper extremity lymphangiograms were obtained in patients with lymphoma referred for radiation therapy. The projection of the opacified axillary nodes is analyzed when using the mantle technique in various positions. The position of the lymph nodes varies considerably in the supine and prone positi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/122.1.227
更新日期:1977-01-01 00:00:00
abstract:PURPOSE:To assess the value of magnetic resonance (MR) imaging in the diagnosis of pelvic inflammatory disease (PID) and to compare MR imaging with transvaginal ultrasonography (US) and laparoscopy. MATERIALS AND METHODS:Thirty consecutive patients hospitalized because they were clinically suspected of having PID unde...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.210.1.r99ja04209
更新日期:1999-01-01 00:00:00
abstract::To determine and quantify the major sources of anxiety for patients undergoing magnetic resonance (MR) imaging and to suggest means by which to eliminate or diminish their negative effects, the authors studied anxiety in 46 subjects. Of these, 20 randomly selected subjects who successfully completed the examination pa...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.170.2.2911670
更新日期:1989-02-01 00:00:00
abstract:PURPOSE:To retrospectively assess the apparent diffusion coefficient (ADC) for prediction of malignancy and prognosis of malignant astrocytic tumors. MATERIALS AND METHODS:The institutional review board approved this study and did not require patient informed consent. Findings from 37 consecutive patients (21 men, 16 ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2413051276
更新日期:2006-12-01 00:00:00