Abstract:
OBJECTIVE:To evaluate stent-induced artifacts by 64-row multidetector computed tomography (MDCT). METHODS:We studied 26 stented patients with MDCT before conventional coronary angiography (CCA). The CT values were measured. Stents were classified as occluded, with significant stenosis, with nonsignificant stenosis, or patent. For the patent stents, mean in-stent and out-stent CT values were compared; stents 3 mm or smaller were compared with stents larger than 3 mm. Multidetector CT was compared with CCA. RESULTS:We analyzed 42 stents. At CCA, 34 stents were patent, 5 were nonsignificantly stenosed, 1 was significantly stenosed, and 2 were occluded. At MDCT, 33 of 34 patent stents, 2 occluded stents, and 1 stent with significant stenosis were correctly diagnosed; nonsignificant stenoses were undetected, 1 patent stent was misdiagnosed as occluded (κ = 0.727). The out-stent CT value was lower than in-stent CT value both in stents 3 mm or smaller (P = 0.001) and stents larger than 3 mm (P < 0.001). The in-stent CT value of stents 3 mm or smaller was higher (P = 0.011) than that of stents larger than 3 mm. CONCLUSIONS:Metal artifacts cause overlooking of nonsignificant stenosis.
journal_name
J Comput Assist Tomogrjournal_title
Journal of computer assisted tomographyauthors
Papini GD,Casolo F,Di Leo G,Briganti S,Fantoni C,Medda M,Inglese L,De Ambroggi L,Sardanelli Fdoi
10.1097/RCT.0b013e3181ddbbc0subject
Has Abstractpub_date
2010-11-01 00:00:00pages
921-6issue
6eissn
0363-8715issn
1532-3145pii
00004728-201011000-00019journal_volume
34pub_type
杂志文章abstract::Mean lung density (MLD), as determined by a chest computed tomographic sector method, was evaluated in 12 patients with sarcoidosis and diffuse interstitial lung disease. The results demonstrate that MLD in sarcoidosis was -610.9 +/- 57.3 Hounsfield units (HU), significantly different (p less than 0.001) from a contro...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198306000-00003
更新日期:1983-06-01 00:00:00
abstract:PURPOSE:The goals of this work were to evaluate the practical utility of MRI to quantify myocardial mass in patients with hypertrophic cardiomyopathy (HCM), define the differences in myocardial mass measurements obtained with three-dimensional and geometric MR methods in patients with normal left ventricular morphology...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199907000-00018
更新日期:1999-07-01 00:00:00
abstract:BACKGROUND:The Mount Fuji sign (MFS) is a radiological sign on computed tomographic scans depicting air between the frontal lobes. Air in this location indicates tension pneumocephalus (TP), considered a neurosurgical emergency.We evaluate the correlation between the MFS and perioperative mortality attributed to TP in ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000897
更新日期:2019-09-01 00:00:00
abstract::Magnetic resonance imaging depicts the morphological details of the female pelvis and is useful for evaluating both benign and malignant cervical masses. Clinical assessment of the extent of cervical cancer is crucial in determining the optimal treatment strategy, but clinical staging by itself has limitations. Clinic...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181ed3090
更新日期:2010-11-01 00:00:00
abstract::The unusual CT appearances of a renal neoplasm, which we have described as a "focal" obstructive nephrogram secondary to transitional cell carcinoma, is reported. An explanation of the appearance is postulated. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1984-10-01 00:00:00
abstract::The typical CT findings of Lhermitte-Duclos disease (dysplastic gangliocytoma of the cerebellum) are a hypodense nonenhancing unilateral posterior fossa mass, with or without adjacent occipital thinning, hydrocephalus, and calcification. Magnetic resonance (MR) has been found to be very helpful, and superior to CT, in...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199011000-00022
更新日期:1990-11-01 00:00:00
abstract::Two patients with phenylketonuria are reported with white matter lesions. Diffusion magnetic resonance (MR) imaging revealed restricted diffusion patterns (high signal) on b = 1000 s/mm2 images associated with low apparent diffusion coefficient values ranging between 0.44 x 10-3 mm2/s and 0.56 x 10-3 mm2/s. On proton ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200307000-00016
更新日期:2003-07-01 00:00:00
abstract:OBJECTIVE:The impact of injection flow rates, mono- or biphasic injection mode, and scan delay on liver and portal vein enhancement with helical CT was evaluated. MATERIALS AND METHODS:The liver of 75 consecutive patients was examined with helical CT before and after injection of 100 ml iopromide (30 g of iodine). Pat...
journal_title:Journal of computer assisted tomography
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1995-05-01 00:00:00
abstract:PURPOSE:Recently, a new specific organ dose adaption and reduction protocol, or SODAR tool (X-CARE, Siemens Healthcare), which reduces dose to the anterior aspect of the body of patients, was installed on our computed tomographic scanner. The purpose of this pilot project was to evaluate image quality and dose distribu...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318251ec61
更新日期:2012-05-01 00:00:00
abstract::Maple syrup urine disease (MSUD) is an inherited metabolic disorder due to decreased decarboxylation of branched chain keto acids triggering an accumulation of leucine, isoleucine, and valine. We describe two infants with biochemically confirmed MSUD in whom computed tomography (CT) revealed cerebral edema. In one of ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198406000-00007
更新日期:1984-06-01 00:00:00
abstract::In a case of cerebral infarction the lesions were isointense to slightly hyperintense in the T2-weighted MR images obtained approximately 2 weeks after the onset. Earlier (1 week after onset), they had been markedly hyperintense. The probably mechanisms behind this phenomenon, referred to as "MR fogging" are discussed...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199101000-00029
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:The prevalence and features of the thyroid pyramidal lobe (TPL) on computed tomography (CT) have been reported, but no ultrasound (US) study has been found. The purposes of the current study were to assess the sonographic prevalence and features of TPLs and to compare the US and CT parameters of TPLs. METHOD...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000054
更新日期:2014-05-01 00:00:00
abstract::Dural venous thrombosis can have a rapidly progressive fatal course if unrecognized; its clinical picture is often confusing. Numerous CT, magnetic resonance (MR), and angiographic findings have been described to help recognize this entity. We present a case of dilated transcerebral medullary veins as a sign of superi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198711000-00028
更新日期:1987-11-01 00:00:00
abstract::A case of a huge intracranial frontoparietal osteochondroma in a 20-year-old man is reported. The presenting symptoms were headache, vomiting, and blurred vision. Apart from papilledema, no other abnormal neurological signs were present. A specific preoperative diagnosis could not be reached from the information provi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198102000-00022
更新日期:1981-02-01 00:00:00
abstract::Magnetic resonance was performed in five patients with obstructive hydrocephalus due to surgically proven colloid cyst of the third ventricle. On T1-weighted images two lesions were homogeneously hyperintense and another homogeneously isointense with the surrounding brain parenchyma. On T2-weighted images these three ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199007000-00005
更新日期:1990-07-01 00:00:00
abstract::Presented is a case of ureteral pseudodiverticulosis diagnosed by multidetector computed tomography (CT). Axial and coronal reformatted CT images revealed multiple small (2-4 mm) outpouchings of both ureters, characteristic of ureteral pseudodiverticulosis. The unenhanced CT also revealed a 6-mm stone at the left uret...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318173ebd0
更新日期:2009-03-01 00:00:00
abstract:OBJECTIVE:To investigate the effect of iodinated contrast medium on sulcal hyperintensity on fluid-attenuated inversion recovery (FLAIR) imaging immediately after intra-arterial thrombolysis in patients with acute ischemic stroke and to determine whether it may be associated with subsequent hemorrhagic transformation (...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000155669.05643.49
更新日期:2005-03-01 00:00:00
abstract::The magnetic resonance imaging characteristics of transient left ventricular apical ballooning are described in this report, and the features that distinguish it from acute myocardial infarction are emphasized. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000148454.67697.42
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND AND AIMS:To prospectively determine the accuracy of liver fat quantification with magnetic resonance imaging (MRI). PATIENTS AND METHODS:The population consisted of 40 patients (mean age, 52.5 years; range, 23-78 years). The same day, all patients underwent MRI and ultrasonography-guided liver biopsy. The h...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318199d883
更新日期:2009-09-01 00:00:00
abstract::The CT findings of multiple lipid-containing dermal cysts in a patient with steatocystoma multiplex are presented. The characteristic locations, shapes, and densities of the cysts in this rare skin disorder are discussed. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198603000-00043
更新日期:1986-03-01 00:00:00
abstract:OBJECTIVE:To describe the computed tomography (CT) and magnetic resonance imaging (MRI) findings of solid organizing hepatic abscesses and correlate them with the pathologic findings. METHODS:Ten patients with 10 pathologically proven solid organizing hepatic abscesses who underwent 3-phase CT (n = 10) or MRI (n = 7) ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200603000-00004
更新日期:2006-03-01 00:00:00
abstract:OBJECTIVE:To investigate the magnetic resonance imaging (MRI) features of well-differentiated hepatocellular carcinoma (HCC). METHODS:We reviewed the MRI of 32 patients with 33 pathologically confirmed well-differentiated HCC. The MRI protocol included T2-weighted imaging with and without fat saturation, dual-phase T1...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200607000-00008
更新日期:2006-07-01 00:00:00
abstract:PURPOSE:The goal of our study was to examine the prevalence of multiple hypodense splenic nodules and their associated diagnoses and to correlate CT appearance with clinical presentation and diagnosis. METHOD:Records of all patients undergoing contrast-enhanced CT from July 1994 through September 1997 were reviewed. C...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199809000-00005
更新日期:1998-09-01 00:00:00
abstract::In children it is often necessary to ligate the splenic artery and the main collateral supply to the spleen during liver transplantation. The complication of splenic infarction has been observed on postoperative CT in such patients. The purpose of our study was to determine the incidence and CT appearance of splenic i...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199005000-00007
更新日期:1990-05-01 00:00:00
abstract:OBJECTIVE:MRI offers many opportunities for noninvasive in vivo measurement of structure-function relationships in the human brain. Although automated methods are now available for whole-brain measurements, an efficient and valid automatic method for volume estimation of subregions such as the frontal or temporal lobes...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199601000-00018
更新日期:1996-01-01 00:00:00
abstract::Neuroradiological findings in two cases of histologically confirmed intracranial sarcoidosis are presented, one with periaqueductal granulomata causing aqueduct obstruction. The granulomatous aggregation was of slightly greater attenuation than normal brain parenchyma and did enhance homogeneously following contrast m...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-197906000-00004
更新日期:1979-06-01 00:00:00
abstract::Several inconstant skull base foramina can be observed on multi-detector-row computed tomographic studies. These include the meningo-orbital foramen, foramen of Vesalius, canaliculus innominatus, palatovaginal canal, persistent craniopharyngeal canal, transsphenoidal canal, canalis basilaris medianus, and fossa navicu...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318289b370
更新日期:2013-07-01 00:00:00
abstract:PURPOSE:The aim of this study was to evaluate the exclusive performance of quality-assured high-resolution breast magnetic resonance imaging (MRI) for early detection of breast cancer in a population of asymptomatic women. MATERIALS AND METHODS:A total of 1189 MRI examinations performed in 789 asymptomatic women (mean...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000650
更新日期:2018-01-01 00:00:00
abstract::Computed tomography scans of the larynx were obtained during quiet breathing and during phonation in 10 volunteers having no neck or larynx abnormalities. The subglottic and glottic laryngeal cavity and soft tissues showed symmetry from side to side. At the supraglottic level, the pliable aryepiglottic folds and pyrif...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198106000-00008
更新日期:1981-06-01 00:00:00
abstract:OBJECTIVE:To study the potential application of magnetic resonance imaging (MRI) for classification of retained placental tissue (RPT) in the uterus postnatally. METHODS:Twenty-two patients with clinically or pathologically proven RPT were studied. RESULTS:The thickness ratio (D1/D2) of invaded (D1) to normal (D2) my...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000791
更新日期:2019-01-01 00:00:00