All issues
Volume 49 (1997)
- Issue 2-4 Pages 123-
Volume 49, Issue 2-4
Displaying 1-4 of 4 articles from this issue
- |<
- <
- 1
- >
- >|
-
Yasuo Yamanouchi, T. Katoh, K. Someda, K. Ikeda, H. Kurokawa, Y. Tanak ...1997 Volume 49 Issue 2-4 Pages 123-127
Published: December 20, 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSTwo 3D time-of-flight MR angiographic techniques were compared in imaging the intracranial vasculature of ten normal volunteers and flowing phantom: a single slab (32mm-thick-slice)method and three thin slabs (16mm-thick-slice,4mm overlap) method. All studies were performed on 1.5T MR system (Toshiba MRT-200FX-III). The field echo method was used, with velocity compensation gradients in the read and slice direction, with a pulse sequence of TR=55ms; TE = 8ms; excitations = 2; flip angle = 25°. Image acquisition was performed with a m atrix of 256 X 256 and a field of view of 20cm. Images with three slabs method showed more small peripheral branches and venous system compared with single slab method in all volunteers. Arterial and venous system was demonstrated separately by adding a presaturation pulse caudal or cranial to the imaging plane. Experiment with flowing phantom revealed the intensity of the outflow side in three slabs method did not reduce in the intensity profile. On the contrary, intensity profile showed remarkable reduction of intensity in the outflow side in a single slab method. We conclude that the visualization of small vessels, veins and distal vesseles in thick imaging volume is improved consistently with multiple thin slab method.View full abstractDownload PDF (1204K) -
Atsuko Tanabe, Shigeo Kyutoku, Yutaka Ogawa, Nobuyuki Sakai1997 Volume 49 Issue 2-4 Pages 128-133
Published: December 20, 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSA case of huge frontal sinus mucocele, which was treated by an intracranial approach, is reported. A 69-year-old male suffered from the gradually developed exopthalmos of the right eye, orbital dystopia and double vision, was diagnosed the frontal sinus mucocele.
Preoperative MRI revealed the huge cyst of the right frontal sinus inv ading ethmoid sinuses and the orbit. The patient underwent the cyst extirpation by an intracranial approach; after the complete excision and a dural repair, pericranial flap was dissected to reconstruct the anterior skull base. Post operative course has uneventful.View full abstractDownload PDF (1652K) -
Isami Y, Nakamura E, Muramatu M, Okamoto M, Yoshioka M, Ikuma T1997 Volume 49 Issue 2-4 Pages 134-139
Published: December 20, 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSThe urea rebound phenomenon (Ru) after hemodialysis has been reported recently. The present study was made in an attempt to clarify the influence of Ru on normalized dialyser urea clearance (Kt/V'), time averaged concentration of blood urea nitrogen (TACBUN) and protein catabolic rate (PCR). A significant correlation was found between the Ru and Kt/V, while no significant correlation was seen between the Ru and PCR. These results indicate that the Ru is dependent on the efficiency of hemodialysis. The different values of Kt/V, TACBUN and PCR were calcuated using BUN values at the end of hemodialysis and 30min after dialysis, and compared. When calculating Kt/V, PCR and TACBUN using BUN values obtained immediately after hemodialysis, Kt/V and PCR were overestimated by about 15.6% and 8.5%, respectively, and TACBUN was underestimated by 4%. These results indicate the necessity of taking the Ru into account when determining whether or not the patient is receiving optimal dialysis.View full abstractDownload PDF (916K) -
Isami Y, Nakamura E, Muramatu M, Okamoto M, Yoshioka M, Ikuma T1997 Volume 49 Issue 2-4 Pages 140-145
Published: December 20, 1997
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSAdvances in the hemodialysis therapy have been made recent years. It is, however, still important for chronic hemodialysis patients to control the diet and water intake. So, in 76 patients who had been on chronic hemodialysis for more than one year, we analyzed absolute weight gain (gain during the two-day interval between two sessions of hemodialysis) and percentage of weight gain [(absolute weight gain/dry weight) × 100] in relation to normalized dialysis urea clearance (Kt/V), time averaged concentration of blood urea nitrogen (TACBUN) and protein catabolic rate (PCR), and also in relation to protein, energy, salt and potassium intake.
PCR had a signifi cant correlation with both the absolute weight gain (r=0.329,P<0.01) and the percentage of weight gain (r=0.349,P<0.01). Protein, energy, salt and potassium intake also correlated significantly with bothparameters. These results suggest that weight gain is closely rlated to the amount of food intake like water intake.
Dry weight (DW) cor related significantly with absolute weight gain (r=0.392,P<0.0005), while it did not correlate significantly with percentage of weight gain. This suggests that patients with large DW tend to be inappropriately restricted as to their water intake to counter weight gain acthually caused by excessive food ingestion, and that patients with small DW tend to be erroneously subjected to an excessively limited diet for the purpose of suppressing weight gain.View full abstractDownload PDF (849K)
- |<
- <
- 1
- >
- >|