Abstract:
PURPOSE:To retrospectively measure repeat rates for high-cost imaging studies, determining their causes and trends, and the impact of radiologist recommendations for a repeat examination on imaging volume. MATERIALS AND METHODS:This HIPAA-compliant study had institutional review board approval, with waiver of informed consent. Repeat examination was defined as a same-modality examination performed in the same patient within 0 days to 7 months of a first examination. From a database of all radiology examinations (>2.9 million) at one institution from May 1996 to June 2003, a computerized search identified head, spine, chest, and abdominal computed tomographic (CT), brain and spine magnetic resonance (MR) imaging, pelvic ultrasonography (US), and nuclear cardiology examinations with a prior examination of the same type within 7 months. Examination pairs were subdivided into studies repeated at less than 2 weeks, between 2 weeks and 2 months, or between 2 and 7 months. Automated classification of radiology reports revealed whether a repeat examination from June 2002 to June 2003 had been preceded by a radiologist recommendation on the prior report. Trends over time were analyzed with linear regression, and 95% confidence intervals were calculated. RESULTS:Between July 2002 and June 2003, 31 111 of 100 335 examinations (31%) were repeat examinations. Body CT (9057 of 20 177 [45%] chest and 8319 of 22 438 [37%] abdomen) and brain imaging (6823 of 18 378 [37%] CT and 3427 of 11 455 [30%] MR imaging) represented the highest repeat categories. Among five high-cost, high-volume imaging examinations, 6426 of 85 014 (8%) followed a report with a radiologist recommendation. Most common indications for examination repetition were neurologic surveillance within 2 weeks and cancer follow-up at 2-7 months. From 1997 to mid-2003, MR imaging and CT repeat rates increased (0.71% per year [P < .01] and 1.87% per year [P < .01], respectively). CONCLUSION:Repeat examinations account for nearly one-third of high-cost radiology examinations and represent an increasing proportion of such examinations. Most repeat examinations are initiated clinically without a recommendation by a radiologist.
journal_name
Radiologyjournal_title
Radiologyauthors
Lee SI,Saokar A,Dreyer KJ,Weilburg JB,Thrall JH,Hahn PFdoi
10.1148/radiol.2423051754subject
Has Abstractpub_date
2007-03-01 00:00:00pages
857-64issue
3eissn
0033-8419issn
1527-1315pii
242/3/857journal_volume
242pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract:PURPOSE:To evaluate the therapeutic efficacy and safety of percutaneous radiofrequency (RF) ablation for recurrent hepatocellular carcinoma (HCC) in the liver after hepatectomy. MATERIALS AND METHODS:Forty-five patients with 53 recurrent HCC tumors in the liver underwent percutaneous RF ablation with ultrasonographic ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2301021182
更新日期:2004-01-01 00:00:00
abstract::Five hundred celiac angiograms were reviewed to evaluate the frequency of clinically significant variations in the origin of the left gastric artery. In 13 of 500 cases, the left gastric artery arose anomalously most often as a direct branch of the aorta; in 14 of 500 cases, the left gastric artery primarily supplied ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/126.3.623
更新日期:1978-03-01 00:00:00
abstract::Background Water signal contamination is a major challenge for direct ultrashort echo time (UTE) imaging of myelin in vivo because water contributes most of the signals detected in white matter. Purpose To validate a new short repetition time (TR) adiabatic inversion recovery (STAIR) prepared UTE (STAIR-UTE) sequence ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2020200425
更新日期:2020-11-01 00:00:00
abstract::The relation of liver fat content to CT number was studied in 20 rabbits (17 experimental, 3 control), where fatty degeneration was produced by carbon tetrachloride (CCl4) ingestion. Liver scanning was performed before and 2--5 days after CCl4 administration.. Changes (decrease) in CT number were compared with triglyc...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/130.2.511
更新日期:1979-02-01 00:00:00
abstract:PURPOSE:To determine the reliability and accuracy of magnetic resonance (MR) arthrography for the diagnosis of superior labral anterior posterior (SLAP) tears. MATERIALS AND METHODS:The MR arthrograms in 80 patients who underwent arthroscopy and MR arthrography during a 54-month period were retrospectively reviewed. M...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.218.1.r01ja44127
更新日期:2001-01-01 00:00:00
abstract::History A 3-month-old previously healthy girl presented to an outside institution with a 4-day history of low-grade fever, irritability, and a tender "knot" in the upper abdomen. Ultrasonography (US) was performed at an outside hospital. US images were not available for review; however, they showed a mass in the left ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2018160106
更新日期:2018-05-01 00:00:00
abstract::Radiology chiefs at hospitals with open heart surgery programs were queried to ascertain both current and desired degrees of participation by radiologists in coronary angiography. While current participation is limited, respondents indicated a desire to achieve increased active participation. Opposition of cardiologis...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/125.2.313
更新日期:1977-11-01 00:00:00
abstract:PURPOSE:To assess prospectively the concordance of enhancement patterns of focal liver masses on contrast material-enhanced ultrasonographic (US) scans with patterns on contrast-enhanced computed tomographic (CT) scans or magnetic resonance (MR) images. MATERIALS AND METHODS:This study was approved by the institutiona...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2421051006
更新日期:2007-01-01 00:00:00
abstract::A system utilizing a multi-image capacity video disc recorder rather than a photographic camera for the initial recording of ultrasound images id described, as well as the resulting benefits. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/133.2.530
更新日期:1979-11-01 00:00:00
abstract:PURPOSE:To identify predictors of clinically important abnormal findings in computed tomography (CT) images of the head among emergency department (ED) patients without a history of trauma. MATERIALS AND METHODS:Approval was obtained from the institutional research ethics board, and informed consent from patients was ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12120732
更新日期:2013-03-01 00:00:00
abstract::Postoperative irradiation reduces the local recurrence rate for malignant salivary gland tumors. Less extensive surgery followed by immediate radiotherapy is possible without decreasing local control; moreover, cosmetic appearance and physiological function are preserved. Local tumor control was achieved in 16 out of ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.145.1.6812160
更新日期:1982-10-01 00:00:00
abstract::Computed tomographic brain scans of the newborn exhibit relatively greater lucency of white matter compared to the mature patient. This study correlated the x-ray attenuation of white matter with gestational age in 23 neonates, both premature and term. The gray-white matter attenuation difference was calculated and pl...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.139.1.7208910
更新日期:1981-04-01 00:00:00
abstract::Steeple-shaped shadows adjacent to the diaphragm are common in upper lobe collapse due to a variety of causes. They call attention to upper lobe collapse and should not be considered indicative of intrinsic lower lobe abnormality. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.134.3.7355230
更新日期:1980-03-01 00:00:00
abstract::By interposing a camera with a fish-eye lens between the collimator and the illuminated field, radiotherapy ports can be recorded using the localizer light for illumination. An acrylic mold of the camera was used to maintain alignment and immobilization during the necessarily long exposures. The authors consider this ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/123.3.801
更新日期:1977-06-01 00:00:00
abstract::An unusual case of unintentional release of a spring coil into the superior mesenteric artery is reported. The coil migrated distally into the ileocolic artery, and the situation was successfully resolved by retrieval of the coil with grasping forceps. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.160.2.3726140
更新日期:1986-08-01 00:00:00
abstract:PURPOSE:To determine the computed tomographic (CT) detector configuration, patient size, and image noise limitations that will result in acceptable image quality of 80-kV images obtained at abdominal dual-energy CT. MATERIALS AND METHODS:The Institutional Review Board approved this HIPAA-compliant retrospective study ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.10092016
更新日期:2010-12-01 00:00:00
abstract::The onset of impotence was related to penile trauma in ten of 90 patients who underwent angiography. Angiographic results facilitated diagnosis in all patients. Trauma was secondary to a variety of injuries including fractures, soft-tissue perineal injuries without fractures, and repeated perineal pounding during long...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.166.1.3336670
更新日期:1988-01-01 00:00:00
abstract:PURPOSE:To prospectively determine the accuracy of 64-section computed tomographic (CT) angiography for the depiction of coronary artery disease (CAD) that induces perfusion defects at myocardial perfusion imaging with single photon emission computed tomography (SPECT), by using myocardial perfusion imaging as the refe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2482071307
更新日期:2008-08-01 00:00:00
abstract::The techniques and results of percutaneous transluminal angioplasty (TPA) of the renal arteries were evaluated in 20 hypertensive patients with 25 renal artery stenoses. Follow-up angiograms have been obtained in nine patients. Many patients had evidence of both essential and angiotensinogenic hypertension. Eleven pat...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.135.3.7384440
更新日期:1980-06-01 00:00:00
abstract::The authors report a case of traumatic removal of nerve tissue during myelography with the Chynn aspiration cannula. If such a situation occurs, the authors suggest making a second puncture at a different level. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/125.3.734
更新日期:1977-12-01 00:00:00
abstract::Radiologists are frequently called upon to perform percutaneous biopsy. Selection of the proper needle is becoming more complex as the number of types increases and reports of better results with certain needles proliferate. The authors evaluated a wide variety of needles of different caliber, cutting tip, and bevel. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.148.3.6878680
更新日期:1983-09-01 00:00:00
abstract::Although intrauterine hydronephrosis can be detected readily by ultrasound, follow-up ultrasound evaluation on the first day of life may show a falsely normal-appearing kidney. The authors present three infants in whom subsequent studies confirmed the presence of upper urinary tract obstruction. It is postulated that ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.152.2.6539930
更新日期:1984-08-01 00:00:00
abstract::The authors evaluated the effect on mammographic examinations of the use of synchrotron radiation to detect phase-perturbation effects, which are higher than absorption effects for soft tissue in the energy range of 15-25 keV. Detection of phase-perturbation effects was possible because of the high degree of coherence...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.215.1.r00ap10286
更新日期:2000-04-01 00:00:00
abstract::Differences in magnetic resonance (MR) imaging signal-to-noise (S/N) performance between saddle-shaped and solenoidal coils have been postulated. Each coil shape is tied to a particular magnetic field configuration, so that they are not typically interchangeable except in special situations. The solenoidal coil is pre...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.154.1.3964940
更新日期:1985-01-01 00:00:00
abstract::Twelve cases of fibrous ureteral polyps are presented, illustrating their characteristic radiographic appearances. Two types--a long pedunculated mobile variety having a smooth surface, and a relatively shorter lesion covered with thin, finger-like projections--may be identified. Demonstration of the typical findings ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/130.1.73
更新日期:1979-01-01 00:00:00
abstract::Zones of high and low signal intensity on magnetic resonance (MR) images of articular cartilage were correlated with the four histologic zones normally found in such cartilage. Grossly normal articular cartilage from knees and ankles of a fresh cadaver were used in the study. The three zones identified on MR images in...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.181.3.1947110
更新日期:1991-12-01 00:00:00
abstract::In 34 of 847 patients (4%), testicular cysts were discovered with high-resolution ultrasound (US). Sixteen had a cystic testicular tumor, and US images showed multiple cysts and solid tumor portions in 12 of these 16 (75%). Eighteen patients had nonneoplastic cysts: Five had cysts of the tunica albuginea, and 13 had i...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.168.1.3289090
更新日期:1988-07-01 00:00:00
abstract::Radiation dose data were collected from a calibrated multi-detector row computed tomographic (CT) scanner during trauma CT. One protocol (used with 10 case subjects) involved a single-pass continuous whole-body acquisition from cranial vertex to symphysis pubis, while the other, conventional protocol (used with 10 con...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2293021651
更新日期:2003-12-01 00:00:00
abstract:PURPOSE:To determine the feasibility of measuring choline and glycogen concentrations in normal human liver in vivo with proton (hydrogen 1 [1H]) magnetic resonance (MR) spectroscopy. MATERIALS AND METHODS:Signed consent to participate in an institutional review board-approved and HIPAA-compliant study was obtained fr...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12112344
更新日期:2012-11-01 00:00:00
abstract::Duplex and color Doppler ultrasound (US) are noninvasive techniques capable of providing much information about the condition of blood vessels and flow within them throughout the body. Doppler US provides more than noninvasive angiography. Besides assessment of blood vessel patency and direction of flow, analysis of t...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiology.174.2.2404310
更新日期:1990-02-01 00:00:00