scholarly journals Quantitative Assessment of Shape Deformation of Regional Cranial Bone for Evaluation of Surgical Effect in Patients with Craniosynostosis

2021 ◽  
Vol 11 (3) ◽  
pp. 990
Author(s):  
Min Jin Lee ◽  
Helen Hong ◽  
Kyu Won Shim

Surgery in patients with craniosynostosis is a common treatment to correct the deformed skull shape, and it is necessary to verify the surgical effect of correction on the regional cranial bone. We propose a quantification method for evaluating surgical effects on regional cranial bones by comparing preoperative and postoperative skull shapes. To divide preoperative and postoperative skulls into two frontal bones, two parietal bones, and the occipital bone, and to estimate the shape deformation of regional cranial bones between the preoperative and postoperative skulls, an age-matched mean-normal skull surface model already divided into five bones is deformed into a preoperative skull, and a deformed mean-normal skull surface model is redeformed into a postoperative skull. To quantify the degree of the expansion and reduction of regional cranial bones after surgery, expansion and reduction indices of the five cranial bones are calculated using the deformable registration as deformation information. The proposed quantification method overcomes the quantification difficulty when using the traditional cephalic index(CI) by analyzing regional cranial bones and provides useful information for quantifying the surgical effects of craniosynostosis patients with symmetric and asymmetric deformities.

2021 ◽  
Vol 2 (1-2) ◽  
pp. 86-91
Author(s):  
Shadlinski V.B. ◽  
Abdullayev A.S.

The material of the study was the skull of an 8-year-old girl. In the cranioscopy, the following were identified: on the right side, the bone of the sphenoid fontanel or epipteric bone; bones of lambdoid suture - on the right side in the amount of 5, on the left side -1 bone; preinterparietal bone, ospreinterparietale.By the craniometric method, the height and width of the bones were determined. The bone of the sphenoid fontanelle or epipteric bone is located between the frontal, parietal bones, the greater wing of the sphenoid bone, and the squama of the temporal bone. The width of the epipteric bone is 16.5 mm, height 9.5 mm. The bones of the lambdoid suture in the amount of 5 on the right and the 1st on the left were located in an elongated state.The largest bone was located in the middle of the right lambdoid suture; apparently, it was formed by the union of at least two Wormian bones. Preinterparietal bone has a triangular shape, the base of the triangle facing the sagittal suture, the tip, slightly rounded - in the direction of the occipital bone. The lateral angles of the preinterparietal bone are serrated, which, in principle, clearly distinguishes it from the parietal bones. The bone was single, no sutures or grooves dividing the preinterparietal bone into parts were observed. The width of the bone is 18.5 mm, height 13.8 mm.


Neurosurgery ◽  
1988 ◽  
Vol 23 (2) ◽  
pp. 196-202 ◽  
Author(s):  
Clarence S. Greene ◽  
Ken R. Winston

ABSTRACT A series of 50 consecutive patients with scaphocephaly treated by a new operation are reported, and the results are reviewed in detail. The treatment consists of a broad sagittal craniectomy plus extensive morcellation of both parietal bones and, occasionally, the squamous portion of the occipital bone, without dislodging the bony fragments from their dural attachments. The procedure can be done relatively rapidly (median operative time = 55 min) and with minimal loss of blood (median transfusion = 85 ml). The results are analyzed by several criteria and are considered to be excellent.


2020 ◽  
Author(s):  
José‐Carlos Delgado‐González ◽  
Carlos‐de‐la Rosa Prieto ◽  
Nuria Vallejo‐Calcerrada ◽  
Diana‐Lucía Tarruela‐Hernández ◽  
Sandra Cebada‐Sánchez ◽  
...  

VASA ◽  
2017 ◽  
Vol 46 (5) ◽  
pp. 383-388 ◽  
Author(s):  
Henrik Christian Rieß ◽  
Anna Duprée ◽  
Christian-Alexander Behrendt ◽  
Tilo Kölbel ◽  
Eike Sebastian Debus ◽  
...  

Abstract. Background: Perioperative evaluation in peripheral artery disease (PAD) by common vascular diagnostic tools is limited by open wounds, medial calcinosis or an altered collateral supply of the foot. Indocyanine green fluorescent imaging (ICG-FI) has recently been introduced as an alternative tool, but so far a standardized quantitative assessment of tissue perfusion in vascular surgery has not been performed for this purpose. The aim of this feasibility study was to investigate a new software for quantitative assessment of tissue perfusion in patients with PAD using indocyanine green fluorescent imaging (ICG-FI) before and after peripheral bypass grafting. Patients and methods: Indocyanine green fluorescent imaging was performed in seven patients using the SPY Elite system before and after peripheral bypass grafting for PAD (Rutherford III-VI). Visual and quantitative evaluation of tissue perfusion was assessed in an area of low perfusion (ALP) and high perfusion (AHP), each by three independent investigators. Data assessment was performed offline using a specially customized software package (Institute for Laser Technology, University Ulm, GmbH). Slope of fluorescent intensity (SFI) was measured as time-intensity curves. Values were compared to ankle-brachial index (ABI), slope of oscillation (SOO), and time to peak (TTP) obtained from photoplethysmography (PPG). Results: All measurements before and after surgery were successfully performed, showing that ABI, TTP, and SOO increased significantly compared to preoperative values, all being statistically significant (P < 0.05), except for TTP (p = 0.061). Further, SFI increased significantly in both ALP and AHP (P < 0.05) and correlated considerably with ABI, TTP, and SOO (P < 0.05). Conclusions: In addition to ABI and slope of oscillation (SOO), the ICG-FI technique allows visual assessment in combination with quantitative assessment of tissue perfusion in patients with PAD. Ratios related to different perfusion patterns and SFI seem to be useful tools to reduce factors disturbing ICG-FI measurements.


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