Iliosacral screw corridors in Japanese subjects: a study using reconstruction CT scans

Abstract Purpose Stability of the dorsal pelvic ring is important for patient mobilisation and can be restored using several surgical procedures after fracture. Placement of percutaneous iliosacral screws is a reliable and minimal-invasive technique to achieve stabilisation of the dorsal pelvic ring by placement of two screws in the first sacral vertebra. Aim of this study was to evaluate 3D CT scans regarding the anatomical possibility to place two 7.3 mm iliosacral screws for fixation of the dorsal pelvic ring. Methods 3D CT datasets of 500 consecutive trauma patients with 1000 hemipelves of a mid-european level I trauma centre with or without pelvic injury were evaluated and measured bilaterally in this retrospective study. Results One thousand hemipelvic datasets of 500 patients (157 females, 343 males) with a mean age of 49.7 years (18 to 95) were included in this study. Only 16 hemipelves (1.6%, 11 in females, 5 in males) in 14 patients (2.8%, 9 females = 5.73%, 5 males = 1.5%) showed too narrow corridors so that 7.3 mm screw placement would not be possible (p = 0.001). In women, too narrow corridors occurred 3.9 times as often as in men. Only two females showed this bilaterally. Conclusion The evaluation of 3D CT scans of the pelvis showed the importance of planning iliosacral screw placement, especially if two 7.3 mm screws are intended to be placed in the first sacral vertebra.

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Clinical criteria can identify children with blunt head trauma who are unlikely to need CT scans

PsycEXTRA Dataset ◽

10.1037/e556122006-015 ◽

2006 ◽

Keyword(s):

Head Trauma ◽

Ct Scans ◽

Clinical Criteria ◽

Blunt Head Trauma

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Incremental Validity of Neuropsychological Evaluations and CT Scans in Predicting Long-Term Outcomes for Persons With Traumatic Brain Injury

PsycEXTRA Dataset ◽

10.1037/e708332011-001 ◽

2011 ◽

Cited By ~ 1

Author(s):

Michael W. Williams ◽

Lisa J. Rapport ◽

Hillary A. Greene ◽

Robin A. Hanks ◽

Scott R. Millis

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Incremental Validity ◽

Ct Scans ◽

Long Term Outcomes ◽

Neuropsychological Evaluations

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Projected future risk of leukemia and brain tumors from unnecessary brain CT scans: a multi-center study in Iran

Radioprotection ◽

10.1051/radiopro/2020073 ◽

2020 ◽

Author(s):

A. Asgari ◽

A.A. Parach ◽

F. Bouzarjomehri ◽

F. Shirani-Takabi ◽

A.H. Mehrparvar ◽

...

Keyword(s):

Brain Cancer ◽

Age Groups ◽

Young Patients ◽

Ct Scans ◽

Brain Ct ◽

Males And Females ◽

And Gender ◽

Multi Center Study ◽

Gender Groups ◽

Probability Of Cancer

Introduction: Computer Tomography (CT) scans can deliver a relatively high radiation dose to the patient, therefore radiation protection for this modality is paramount. The present study determined the frequency of no abnormality detected (NAD) brain CT scans and probability of cancer induction in different age groups and genders. Methods: In this study, brain CT reports were used to identify any findings as abnormality detected (AD) and others as NAD. Then probability of future leukemia and brain cancer was estimated for different age and gender groups. Results: On average, in 65% of the cases the results were NAD (56% and 76% among males and females, respectively). Among children, 79% of the reports were NAD. The total number of projected brain cancers was 1.8 and 1.3 for males and females, respectively. The number of projected leukemia cases was 0.75 and 0.7 for males and females, respectively. For pediatric patients, brain CT scans can lead to leukemia cases about 4.5 times more often than adults. Conclusion: Brain CT scans can lead to additional cases of brain cancer and leukemia. A significant fraction of brain CTs were NAD (non-pathologic) and could practically be replaced by other radiation-free imaging modalities, especially in pediatric and young patients.

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