|
|
| Identifier |
000367225 |
| Title |
Τεχνικές υπολογιστικής τομογραφίας την μελέτη των ιερολαγονίων αρθρώσεων |
| Alternative Title |
Computed tomograph techniques in the evaluation of the sacroiliac joints |
|
Author
|
Φαφλιά, Χριστίνα Π
|
|
Thesis advisor
|
Γκουρτσογιάννης, Νικόλαος
|
|
Reviewer
|
Κουρούμαλης, Ηλίας
Πρασόπουλος, Π.
Δαμηλάκης, Ιωάννης
Τσέτης, Δημήτριος
Περισυνάκης, Κ.
Παπαδάκη, Ελένη
|
| Abstract |
Purpose: To select an optimal technique for low dose high resolution CT-HRCT of the sacroiliac joints -SJ.
To describe the normal CT appearance of the SJ including the anatomical variants and correlate the radiological findings with patients physical data.
To apply a HRCT protocol of the SJ in a group of patients with known inflammatory bowel disease-IBD in order to determinate the prevalence of sacroiliitis and to correlate the CT findings with the duration and activity of the disease.
Materials and methods: Dose measurements were performed on a Rando anthropomorphic phantom for 4 CT protocols and 2 x-ray protocols of the SJ, followed by image quality study and clinical study.
The study of the normal ageing and anatomical variants of the SJ comprised 288 and 534 patients respectively. All patients underwent pelvic CT for various reasons unrelated to joints diseases.
40 patients with IBD underwent HRCT of the SJ -17 symptomatic for sacroiliitis and 23 asymptomatic.
Results: HRCT protocol of the SJ, with 1.5mm slice thickness, 3.5mm interval and the lowest dose comparing to the other protocols, was considered optimal for the examination of the SJ.
The joint space tends to become narrow and less uniform with advancing age, while subchondral sclerosis appears to be wider and less uniform in the elderly. Ankylosis and erosions were observed rarely only after 50yrs. A higher prevalence of asymmetric, non uniform SJ space, ill defined, non uniform, extensive subchondral sclerosis and ankylosis were observed in women, obese and multiparous mothers. Six types of anatomical variants
were observed: accessory SJ, iliosacral complex, bipartite or crescent-like iliac bony plate, semicircular defects and ossification centers.
Asymptomatic and symptomatic sacroiliitis was observed in 39.1% and 47% of patients respectively, with similar frequency to Crohn’s disease and ulcerative colitis, without correlation to the activity of the disease.
Conclusions: HRCT technique of the SJ with thin slices and interspacing provides high quality images and implies the lowest dose.
The CT appearance of the SJ is closely related to patients’ physical data. Knowledge of the spectrum of radiological findings observed in the normal population may be useful when interpreting examinations of patients with SJ disease.
Awareness of the high frequency of asymptomatic sacroiliitis in patients with IBD, may lead to the detection of unsuspected cases of IBD or to providing early treatment.
|
| Language |
Greek |
| Subject |
Anatomy |
|
Computed tomography |
|
High Resolution |
|
Inflammatory bowel diseases |
|
Sacroiliac Joint radiography |
|
Technology, Radiologic |
|
Ανατομία |
|
Ιερολαγόνια άρθρωση Ακτινογραφία |
|
Τεχνολογία, Ακτινολογική |
|
Υπολογιστική τομογραφία |
|
Υψηλής ευκρίνειας ΥΤ |
|
Φλεγμονώδεις εντεροπάθειες |
| Issue date |
2010-07-20 |
| Collection
|
School/Department--School of Medicine--Department of Medicine--Doctoral theses
|
|
|
Type of Work--Doctoral theses
|
| Views |
274 |
Τεχνικές υπολογιστικής τομογραφίας την μελέτη των ιερολαγονίων αρθρώσεων
