doseutility: command not found

Have You tried accessing the binary with the full path?

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

[root@server ~]# echo $PATH

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/doseutility - from package: pixelmed-apps
/usr/bin/doseutility - from package: pixelmed-webstart-apps

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