Variasi Slice Thickness dan Rekonstruks Increment Terhadap Informasi Citra Anatomi Pemeriksaa MSCT Stonografi pada Kasus Nephrolithiasis Slice Thickness Variation and Increment Recnonstruction on Anatomic Image Information of MSCT Stonography Examination in Nephrolithiasis Cases
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Abstract
Nephrolithiasis, atau batu ginjal, merupakan salah satu gangguan urologi yang umum dan membutuhkan diagnosis yang akurat. Multislice Computed Tomography (MSCT) Stonografi menjadi modalitas utama untuk mendeteksi batu ginjal. Kualitas citra anatomi yang dihasilkan MSCT sangat dipengaruhi oleh variasi slice thickness dan rekonstruksi increment, yang berperan penting dalam diagnosis klinis. Tujuan Penelitian ini bertujuan untuk menganalisis variasi slice thickness dan rekonstruksi increment terhadap informasi citra anatomi pada pemeriksaan MSCT stonografi pada kasus nephrolithiasis. Metode Penelitian ini merupakan penelitian kuantitatif eksperimental dengan desain one-shot case study. Sebanyak 10 pasien yang didiagnosis nephrolithiasis menjalani pemeriksaan MSCT stonografi dengan variasi slice thickness (1mm, 4mm, 5mm, dan 10mm) serta rekonstruksi increment (0,3mm, 1,6mm, 2,5mm, dan 3mm). Evaluasi informasi citra anatomi dinilai oleh dua radiolog menggunakan kuisioner yang mencakup enam kriteria anatomi: renal hilux, left ureter, perirenal fat, renal pelvis, calix, dan Gerota’s fascia. Analisis statistik dilakukan menggunakan Friedman. Hasil penelitian menunjukkan bahwa terdapat perbedaan signifikan antara variasi slice thickness dan rekonstruksi increment terhadap informasi citra anatomi P value 0.000 (p<0.05). Kombinasi slice thickness 1 mm dan rekonstruksi increment 0,3mm menghasilkan informasi citra anatomi yang paling optimal dengan mean rank tertinggi (4.00). Slice thickness 10mm dan rekonstruksi increment 3mm menghasilkan informasi citra anatomi terendah dengan mean rank terendah (1.00). Uji Friedman menunjukkan perbedaan signifikan pada setiap anatomi dengan p value 0.000. Kesimpulan Variasi slice thickness dan rekonstruksi increment berpengaruh signifikan terhadap informasi citra anatomi pada pemeriksaan MSCT stonografi. Kombinasi slice thickness 1 mm dan rekonstruksi increment 0,3mm direkomendasikan untuk menghasilkan informasi citra yang optimal dalam diagnosis nephrolithiasis.
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