dcm_verify: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/dcm_verify - from package: ctn

You may install the required package with command apt-get install {package}

Error in other languages:
dcm_verify: bevel nie gevind nie
dcm_verify: comandă negăsită
dcm_verify: comando não encontrado
dcm_verify: commande introuvable
dcm_verify: command not found
dcm_verify: käsku ei ole
dcm_verify: không tìm thấy lệnh
dcm_verify: komanda nerasta
dcm_verify: Kommando nicht gefunden.
dcm_verify: kommandot finns inte
dcm_verify: komut yok
dcm_verify: nie znaleziono polecenia
dcm_verify: níor aimsíodh an t-ordú
dcm_verify: no se encontró la orden
dcm_verify: no s'ha trobat l'ordre
dcm_verify: opdracht niet gevonden
dcm_verify: parancs nem található
dcm_verify: perintah tidak ditemukan
dcm_verify: príkaz nenájdený
dcm_verify: příkaz nenalezen
dcm_verify: команда не найдена
dcm_verify: командата не е открита
dcm_verify: 命令找不到
dcm_verify: コマンドが見つかりません